Category: javascript

In Visual Studio 2017, I could just add:
/// <reference path="../core3/core3.js" />
to the top of a .js file and intellisense would know to look there for functions. listing them when I start typing “$.”, and listing their parameters when I selected one. F12 would also redirect to the function in another file.

I recently got a new computer and installed Visual Studio Pro 2022. I cannot get intellisense to work in 2022 for JS files. It works for C#. If the JS function is local in that file, it will get the function name, but not its parameters. F12 will redirect to it.

If the function is in a reference path js file, it will get nothing. F12 does not work.
Pressing crtl + shift + space just flashes a “Loading…” for less than 1 second.

I remember having this problem with VS 2019 too, so I just uninstalled it and went back to 2017, that’s not an option now as Mainstream support for Visual Studio 2017 ended on April 12, 2022.

I do get partial results with cryptic errors: “IntelliSense is unable to determine the accuracy of this completion item.”

IntelliSense is unable to determine the accuracy of this completion item.

JSDoc comments ahead of functions are ignored and not displayed /** @description, @param, @return */

I’ve tried:

Making sure [Auto List members] and [Parameter Information] are checked in Tools -> Options -> Text Editor -> All Languages -> General.

added scripts_references.js file to project

deleted the .vs folder in the solution and let it rebuild

installed all sorts of different features in VS i don’t need.

deleted the C:Users[user]AppDataLocalMicrosoftTypeScript folder and let it rebuild

cursing

using a solution created in VS2017

creating a new solution in VS2022 – ASP.NET empty web site, then copy in code from previous solution.

updated VS2022 to the latest version

restarting computer

Any ideas on how to enable the most basic of visual studio features in 2022?

I know that botting ends up in accounts being banned from social media.

However, being logged in on a dekstop and running a script from the browser to follow people from a list / unfollow them and like posts should be doable and not detectable right ? It would look like normal input for the social media, no ?

Basically like an auto-clicker with a few extra steps. What does everyone think ?

Thanks !

I searched online and didn’t find any active script like that.

I created an ASP.NET Core MVC web application and I added var colors in .css which I change via this JavaScript code. Every time the page reloads there is a small(few milliseconds) noticeable flicker from default colors to the light or dark theme I set. What causes this and how can I fix this? Is this caused by bootstrap boilerplate from ASP.NET Core MVC project and scaffolded views?

const root = document.querySelector(":root");
const themeIcon = document.querySelector(".themeicon");
const storageTheme = localStorage.getItem("theme");

if (storageTheme === "dark" || storageTheme === "light")
    setTheme(storageTheme);
else if (window.matchMedia("(prefers-color-scheme: dark)").matches)
    setTheme("dark");
else
    setTheme("light");

function setTheme(theme) {
    root.style.setProperty("--bg-color", theme === "light" ? "#ffffff" : "#161618");
    root.style.setProperty("--text-color", theme === "light" ? "#1a1a1a" : "#ffffff");
    localStorage.setItem("theme", theme);
}

themeIcon.addEventListener("click", function () {
    localStorage.getItem("theme") === "light"
        ? setTheme("dark")
        : setTheme("light");
});

I am trying to send a message from my contextMenu script, yet I can’t add a listener on the content script side.

Running this simple code gives me the error addListener is undefined:

export const config: PlasmoCSConfig = {
  matches: ["*://*/*"],
  run_at: "document_idle",
  world: "MAIN"
}
chrome.runtime.onMessage.addListener(function (message) {
  if (message.action === "new_note") {
    // my code
    console.log(message)
  }
})

Am I configuring something incorrectly? Do I need to do something different?

I have Textarea component that handle Markdown headers:

type TextareaProps = {
    initValue: string;
    style?: StyleProp<TextStyle>;
    onChange?: (value: string) => void;
};

type OnChangeFun = NativeSyntheticEvent<TextInputChangeEventData>;

const Textarea = ({initValue, style, onChange = () => {}}: TextareaProps) => {
  const [value, setValue] = useState<string>(initValue);

  const changeHandler = ({nativeEvent: {text}}: OnChangeFun) => {
    setValue(text);
    onChange(text);
  };
  return (
    <TextInput
      style={[styles.textarea, style]}
      multiline
      onChange={changeHandler}>
      <Text>
        {value.split('n').map((line, index) => {
          const style = line.match(/^#/) && styles.header;
          return (
              <Fragment key={`${index}-${line}`}>
                <Text style={style} >{ line }</Text>
                {"n"}
              </Fragment>
          );
        })}
      </Text>
    </TextInput>
  );
};

The problem is that when I enter a character the cursor jumps two characters. If it’s the last character in the line it jumps to the next line.

I’ve tried to add controlled selection:

const Textarea = ({initValue, style, onChange = () => {}}: TextareaProps) => {
  const [value, setValue] = useState<string>(initValue);
  const [selection, setSelection] = useState<Selection>({
    start: 0,
    end: 0
  });
  useEffect(() => {
    setSelection(({start, end}) => {
      if (start === end) {
        start += 1;
        end = start;
      }
      return { start, end };
    });
  }, [value]);
  const changeHandler = ({nativeEvent: {text}}: OnChangeFun) => {
    setValue(text);
    onChange(text);
  };
  const onSelection = ({ nativeEvent: { selection }}: OnSelectionFun) => {
    setSelection(selection);
  };
  return (
    <TextInput
      selection={selection}
      style={[styles.textarea, style]}
      multiline
      onSelectionChange={onSelection}
      onChange={changeHandler}>
      <Text>
        {value.split('n').map((line, index) => {
          const style = line.match(/^#/) && styles.header;
          return (
            <Fragment key={`${index}-${line}`}>
              <Text style={style} >{ line }</Text>
              <Text>{"n"}</Text>
            </Fragment>
          );
        })}
      </Text>
    </TextInput>
  );
};

But this makes the whole content disappear when I type something or click inside the input.

Is there a way to add a new line after each line in the Rich Text editor and have the cursor in the right position?

Unfortunately, I can’t create Snack with the code because this is totally broken in Snack, the output of the Textarea is [object Object].

I have two selectboxes that will each have the same values in both selectboxes. I’m trying to perform the following action:

If a user selects an option with the value of “red”, disable the “red” option in the other selectbox, and enable it if a user selects a different color.

I’m able to get the disabled attribute to work, but I can’t figure out how to “un-disable” it after a user selects a different option.

CODEPEN: Codepen example

HTML Example:

<div class="selectbox-container">
            <label for="one">Select One</label>
            <select name="" id="one">
                <option value="red">Red</option>
                <option value="green">Green</option>
                <option value="blue">Blue</option>
                <option value="teal">Teal</option>
            </select>

            <label for="two">Select Two</label>
            <select name="" id="two">
                <option value="red">Red</option>
                <option value="green">Green</option>
                <option value="blue">Blue</option>
                <option value="teal">Teal</option>
            </select>
        </div>

JS:

const preventDuplicate = (e) => {
                if (!e.target == "select-one") return; // Bail if not a selectbox

                const selectOne = document.querySelector("#one");
                const selectTwo = document.querySelector("#two");

                const getValue = () => e.target.value;

                if (e.target == selectOne) {
                    // Get the value
                    const value = getValue();
                    // Get the other selectbox value
                    const otherValue = selectTwo.querySelector(`[value="${value}"]`);

                    // Disable it
                    if (otherValue) {
                        otherValue.setAttribute("disabled", "disabled");
                    } else {
                        otherValue.removeAttribute("disabled");
                    }
                } else {
                    // Get the value
                    const value = getValue();
                    // Get the other selectbox value
                    const otherValue = selectOne.querySelector(`[value="${value}"]`);

                    // Disable it
                    if (otherValue) {
                        otherValue.setAttribute("disabled", "disabled");
                    } else {
                        otherValue.removeAttribute("disabled");
                    }
                }
            };
            document.addEventListener("change", preventDuplicate);

I can’t get the frontend javascript files to update in the browser. When i check inside the container the files do seem to be updated

I’ve got 2 dockerfiles one for frontend and one for backend. 1 cluster 2 pods.

I’m using this

docker build --no-cache -f Dockerfile.frontend --build-arg -t 1.4 .
docker tag 1.4 gcr.io/myproject/mvp-frontend:latest
docker push gcr.io/myproject/mvp-frontend:1.4
kubectl apply -f frontend-deployment.yaml
kubectl set image deployment/frontend-deployment frontend=gcr.io/unity-ai-gen/mvp-frontend:1.4  --record
kubectl rollout restart deployment frontend-deployment

and even

kubectl delete pod frontend-deployment

Hi i’m making a custom plugin that needs to send two of its attributes to a zustand context whenmy data-table-id trait(model attribute) changes. So far I’ve tried this approach that works

const objectArrayEditor = (editor, options) => {
  editor.BlockManager.add("object-array-editor", {
    label: `<div class="gjs-block-label">Object Array Editor</div>`,
    attributes: { class: "fas fa-bars" },
    category: "Dynamic Form",
    content: `<div data-gjs-type="object-array-editor" data-custom-component="object-array-editor"></div>`,
  });

  const comps = editor.DomComponents;
  comps.addType("object-array-editor", {
    model: {
      defaults: {
        traits: [
          { name: "data-table-id", label: t`Table`, type: "table-chooser" },
        ],
      },
      init() {
        this.on("change:attributes:data-table-id", this.handleKeyChange);
      },
      handleKeyChange() {
        const view = this.getView();
        view && view.render();
      },
    },
    view: {component view}
 

  editor.on("component:update", model => {
    console.log('TABLE CHANGE:', 'options', options, 'model.getAttributes()', model.getAttributes() );
  });
};

export default objectArrayEditor;

As you can see at the final lines i’m listening to the editors component:update event in order to see if there’s any update on the component but i would like to be more specific and listens if my data-table-id attribute has changed.

Is there any approach to do this ? I’ve tried with the component:update:{propertyName} event but it’s not working.

I had this error when my application worked perfectly and now I get this error. Can you help me ..?

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; 
check the manual that corresponds to your MariaDB server version for the right syntax to use near 
',gr_store.st_latitude,gr_store.st_longitude)) AS distance, `gr_store`.`st_del...'
 at line 1 (SQL: select `gr_store`.`st_store_name_es` as `store_names`, `gr_cart_save`.`cart_st_id`,
 `gr_store`.`st_type`, `st_currency`, IFNULL(st_minimum_order, 0) as st_minimum_order,
 IF((SELECT count(*) FROM `gr_res_working_hrs` WHERE `wk_res_id`=gr_store.id AND `wk_date`='Thursday' 
AND STR_TO_DATE(`wk_start_time`, '%l:%i %p') <= '11:53:48' AND STR_TO_DATE(`wk_end_time`, '%l:%i %p') >=
 '11:53:48')>0,'Avail','Closed') as store_closed, `gr_store`.`st_pre_order`, `st_latitude`,
 `st_longitude`, (SELECT lat_lng_distance(,,gr_store.st_latitude,gr_store.st_longitude)) 
AS distance, `gr_store`.`st_delivery_radius` from `gr_cart_save` inner join `gr_store` on `gr_store`.
`id` = `gr_cart_save`.`cart_st_id` where (`gr_cart_save`.`cart_cus_id` = 72) and (`gr_store`.`st_status` = 1) 
group by `gr_cart_save`.`cart_st_id`)

I pass the function:

public function Reorder(Request $request, $id)
    {
        //$reorders=DB::table('gr_order')->select('*')->where('ord_transaction_id',base64_decode($id))->get();
        $current_time = date('H:i:s');
        $current_day = date('l');
        $reorders = $sql = DB::table('gr_order')->select('gr_order.*', 'gr_product.pro_had_choice', 'gr_product.pro_item_name', 'gr_product.pro_no_of_purchase', 'gr_product.pro_quantity', 'gr_product.pro_has_discount', 'gr_product.pro_discount_time', 'gr_product.pro_discount_from', 'gr_product.pro_discount_to', 'gr_product.pro_original_price', 'gr_product.pro_discount_price', 'gr_product.pro_had_tax', 'gr_product.pro_tax_percent', 'gr_product.pro_currency', 'gr_store.st_pre_order', DB::Raw("IF((SELECT count(*) FROM `gr_res_working_hrs` WHERE `wk_res_id`=gr_store.id AND `wk_date`='$current_day' AND STR_TO_DATE(`wk_start_time`, '%l:%i %p') <= '$current_time' AND STR_TO_DATE(`wk_end_time`, '%l:%i %p') >= '$current_time')>0,'Available','Closed') as store_closed"))
            ->Join('gr_product', 'gr_product.pro_id', '=', 'gr_order.ord_pro_id')
            ->Join('gr_store', 'gr_store.id', '=', 'gr_order.ord_rest_id')
            ->Join('gr_merchant', 'gr_merchant.id', '=', 'gr_store.st_mer_id')
            ->Join('gr_category', 'gr_category.cate_id', '=', 'gr_store.st_category')
            ->Join('gr_proitem_maincategory', 'gr_proitem_maincategory.pro_mc_id', '=', 'gr_product.pro_category_id')
            ->Join('gr_proitem_subcategory', 'gr_proitem_subcategory.pro_sc_id', '=', 'gr_product.pro_sub_cat_id')
            ->where(
                [
                    'gr_order.ord_transaction_id' => base64_decode($id),
                    'gr_product.pro_status' => '1',
                    'gr_store.st_status' => '1',
                    'gr_merchant.mer_status' => '1',
                    'gr_category.cate_status' => '1',
                    'gr_proitem_maincategory.pro_mc_status' => '1',
                    'gr_proitem_subcategory.pro_sc_status' => '1',
                ])
            ->whereRaw('gr_product.pro_no_of_purchase < gr_product.pro_quantity')
            ->get();

With this function what you do is collect information about an order that has already been placed and the customer would like to select it again to order again.

As a toy example, let’s say I have 3 columns, “City”, “Population”, and “Neighborhoods”.

Ideally, I want the data to be laid out like this in three columns AG Grid:

> San Francisco | 800,000 | Bernal Heights 
                          | The Mission  
                          | ...
> New York      | 8.5 mil | West Village 
                          | Bed Stuy

Since population and the city name are 1:1, they should be on the same row, whereas AG Grid defaults to something like this:

> San Francisco 
    > 800,000

Expanding or collapsing the group should expand / collapse the list of neighborhoods.

Note that in our real use case, each neighborhood would have multiple columns associated with it.

Is there a way to accomplish this in AG Grid (React)?

We saw this previous question, but the example given seems very hacky and not super robust.

I get this error message when trying to access static files. They work fine in the browser, but not in JavaScript.
app code
cross origin

I tried using cors and it only made the API calls work, but not static files.
cors
static files headers

I’am using Leaflet Map and in this map there is a start point and end point the User have to drag the marker from the start point (red circle) to the end point(blue circle). when the User reach the end point I want to display a new Leaflet Map where the User have to drag again the marker from a start point to end point, let’s imagine we have 8 different Maps(map1.js,map2.js…map8.js) and every map is different fron the other. how and what is the best way to change the map with a new one when the user has reached the endpoint? how to call a map1.js and map2.js… every time the user has reached the end point ?

here is my map.js code :

var socket = io("ws://localhost:5501");

        const value = "Hello, server!";
        socket.emit("message", value);

        var slider = document.getElementById("myRange");
        var output = document.getElementById("demo");


        output.innerHTML = slider.value;
        

        slider.oninput = function() {
        output.innerHTML = this.value;
        
        
        var slidervalue=parseInt(output.innerHTML);
        var slidertoservo=maprange(slidervalue,52,1275,0,180);
        
        socket.emit('servoposition', { "status":slidertoservo.toString() });
        }
        

        var map = L.map('map').setView([51.55, 9.99], 6);

        L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
        }).addTo(map);

        map.addControl(new L.Control.Fullscreen());

        var marker=L.marker([53.556130, 9.99818],{draggable:true}).bindPopup();
       
        marker.addTo(map);
         // START POINT 
        var circle1 = L.circle([53.556130, 9.99818], {
        color: 'red',
        fillColor: '#f03',
        fillOpacity: 0.5,
        radius: 6000
        }).addTo(map);
        // END POINT 
        var circle2 = L.circle([47.3982, 11.11831], {
        color: 'blue',
        fillColor: '#5f1ee3',
        fillOpacity: 0.5,
        radius: 6000
        }).addTo(map);
        marker.addTo(map);


        marker.on('drag', getElevation);
                  
        function getElevation(){
          var latlng = marker.getLatLng();
       
        const api_url='http://localhost:5000/v1/test-dataset?locations='+latlng.lat+','+latlng.lng;
        
        const response= fetch(api_url).then(response => response.json()).then((data)=>{document.getElementById('markerelevationvalue').innerHTML = data.results[0].elevation;
        
        if(data.results[0].elevation>=0){
      
                
            var servominouput= maprange(parseInt(slider.value),52,1275,0,180);
            
            var minoutput=parseInt(servominouput);  
            
            
            var servodegree=maprange(data.results[0].elevation,52,1275,minoutput,180);
            servodegree=parseInt(servodegree);    
             
            socket.emit('servoposition_elevation', { "status":servodegree.toString() });
        } else{}
        
        });
        
         
        }

        function maprange(value,min1,max1,min2,max2){
          return((value-min1)*(max2-min2))/(max1-min1)+min2;
        }  

and here is my HTML Page where I am calling Map.js :

<!doctype html>
<html>
    <head>

        <title>Communicating from Node.js to an Arduino</title>
        
        
       <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.6.1/socket.io.js" integrity="sha512-xbQU0+iHqhVt7VIXi6vBJKPh3IQBF5B84sSHdjKiSccyX/1ZI7Vnkt2/8y8uruj63/DVmCxfUNohPNruthTEQA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
       <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
       <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin="" />
       <script src="https://unpkg.com/[email protected]/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script> 
      
       <script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-fullscreen/v1.0.1/Leaflet.fullscreen.min.js'></script>
       <link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-fullscreen/v1.0.1/leaflet.fullscreen.css' rel='stylesheet' />
       

       <style>
        .slidecontainer {
          width: 50%;
          padding-left: 200px;
        }
        
        .slider {
          -webkit-appearance: none;
          width: 50%;
          position: fixed;
          height: 25px;
          background: #d3d3d3;
          outline: none;
          opacity: 0.7;
          -webkit-transition: .2s;
          transition: opacity .2s;
        }
        
        .slider:hover {
          opacity: 1;
        }
        
        .slider::-webkit-slider-thumb {
          -webkit-appearance: none;
          appearance: none;
          width: 25px;
          height: 25px;
          background: #04AA6D;
          cursor: pointer;
        }
        
        .slider::-moz-range-thumb {
          width: 25px;
          height: 25px;
          background: #04AA6D;
          cursor: pointer;
        }
        /* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
 #infoPanel {
  /*float: right;
  margin-left: 10px;*/
  position: absolute;
  top: 10px;
  right: 10px;
  }
  #infoPanel div {
  margin-top: 5px;
}
  #map {
    height:50%;
    width:100%;
    float: left;
    top: 113px;
  /*width: 1200px;
  height: 1000px;
  float: left;*/
  }
  
  /* 
   * Optional: Makes the sample page fill the window. 
   */
  html,
  body {
    height: 100%;
    margin: 0;
    padding: 0;
    touch-action: none;
  }
        </style>
    </head>
    <body>

       
        <div class="slidecontainer">
        <input type="range" min="52" max="1275" value="1" class="slider" id="myRange">
        <p>Value: <span id="demo"></span></p>
        </div>
        <div id="map"></div>  
        <div id="infoPanel">
          <b>elevation value:</b>
          <div id="markerelevationvalue"><i>drag the marker to see the elevation value.</i></div>
          <b>User hint:</b>
          <div id="info"></div>
          
        </div>

        
       <script src="map.js"></script>
    </body>
</html>

does any one have an idea how to load a new Map every time when the user has reached the end point in the map?

I have a little problem with npm.
I started a new project and I’m stuck right at the beginning and I don’t know what to do. I know it’s pretty easy, but in this case I tried everything and nothing helped, so thanks in advance for the help. As always, I installed the node modules in the new project and immediately there was a bug that they could not be downloaded directly in the VS code terminal, but could only be installed using cmd. After I wanted to test if everything was running as it should, I tried to turn on the node server and immediately the terminal gave me the following error: “nmp: The term ‘nmp’ is not recognized as a name of a cmdlet, function, script file, or executable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.” So I immediately tried to find a solution on the Internet. I tried: YouTube, various forums and nothing worked what they advised. I tried creating a new path to npm, didn’t help. I tried reinstalling node.js, didn’t help. I even tried reinstalling VS code and what do you think, didn’t help. I’m attaching pictures. And thank you in advance for your help. PS: I am a beginner
enter image description here, enter image description here, enter image description here, enter image description here, enter image description here

As I wrote:

1. I tried adding the path to both npm and nodejs – didn’t help
2. I tried reinstalling nodejs – didn’t help
3. I tried reinstalling VS code – didn’t help

I am trying to use an example I found to fetch json data from my website. It is failing to authenticate. I can watch the error 401 on the nginx access.log. I have tested the user:password using http fetch on my browser and the json does return. I suspect the issue has to be a headers problem but I am not certain how to debug this.

I have added the this code to the nginx config file:

#Define Access-Control
add_header Access-Control-Allow-Origin "mydomain";
add_header Access-Control-Allow-Credentials: true;
add_header Access-Control-Allow-Methods: GET;
add_header Access-Control-Allow-Headers: "application/json";

Here is the JavaScript I am using

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Fetch with Basic Access Authentication</title>
    <meta name="viewport" content="width=device-width">
<!--    <link rel="stylesheet" href="main.css" />-->
    <style>
        p{
            cursor: pointer;
        }
    </style>
</head>
<body>
    <header>
        <h1>Fetch with Basic Access Authentication</h1>
    </header>
    <main>
        <p>Response will appear here after you click.</p>
    </main>
    <script>
        let p;
        
        document.addEventListener('DOMContentLoaded', 
            function(){
                p = document.querySelector('main>p');
                p.addEventListener('click', doFetch);
            });
        
        function doFetch(ev){
            let uri = "https://mydomain";
            
            let h = new Headers();
            h.append('Accept', 'application/json');
            let encoded = window.btoa('user:password');
            let auth = 'Basic ' + encoded;
            h.append('Authorization', auth );
            console.log( auth );
            
            let req = new Request(uri, {
                method: 'GET',
                headers: h,
                credentials: 'include'
            });
            //credentials: 'same-origin'
            
            fetch(req)
            .then( (response)=>{
                if(response.ok){
                    return response.json();
                }else{
                    throw new Error('BAD HTTP stuff');
                }
            })
            .then( (jsonData) =>{
                console.log(jsonData);
                p.textContent = JSON.stringify(jsonData, null, 4);
            })
            .catch( (err) =>{
                console.log('ERROR:', err.message);
            });
        }
        

</body>
</html>

There is a jquery-ui widget named autocomplete, which has a function _change:

// (...)
$.widget( "ui.autocomplete", {
    version: "@VERSION",
    defaultElement: "<input>",
    options: {
        appendTo: null,
        autoFocus: false,
        delay: 300,
        minLength: 1,
        position: {
            my: "left top",
            at: "left bottom",
            collision: "none"
        },
        source: null,

        // Callbacks
        change: null,
        close: null,
        focus: null,
        open: null,
        response: null,
        search: null,
        select: null
    },

    requestIndex: 0,
    // (...)
    
    _change: function( event ) {
        if ( this.previous !== this._value() ) {
            this._trigger( "change", event, { item: this.selectedItem } );
        }
    },
// (...)

I have converted an input into an Autocomplete:

$("#myInputId").autocomplete({
    source: [],
    change: function( event, ui ) {
        // (...)
    }
});

I would like to programmatically access and modify this.previous value used in _change function. How can I do that? I have already tried to access that field:

$("#myInputId").autocomplete("instance").previous
$("#myInputId").autocomplete("widget").previous

but I have received undefined.