Category: javascript

I’m stuck. Trying to push input values into an array, which actually works, but then I want to get them out into an unordered list, and they don’t show up. What am I doing wrong?

const inputBtn = document.querySelector("#input-btn");
let myLeads = [];
const inputEl = document.querySelector("#input-el");
const ulEl = document.querySelector("#ul-el");

inputBtn.addEventListener("click", function() {
  myLeads.push(inputEl.value);
  console.log(myLeads);
});

for (let i = 0; i < myLeads.length; i++) {
  ulEl.innerHTML += "<li>" + myLeads[i] + "</li>";
}

<input type="text" id="input-el" />
<button id="input-btn">SAVE INPUT</button>
<ul id="ul-el"></ul>

I would want to execute in parallel two API calls inside my thunk. However, I need to properly handle the errors. I have prepared simplified version of my async functions. Sections I want to parallelize are commented.

async function addCredentialA() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (Math.random() < 0.5)
        return resolve({status: '200'})
      else
        return reject({status: '500'})
    }, 1000)
  });
}

async function addCredentialB() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      if (Math.random() < 0.3)
        return resolve({status: '200'})
      else
        return reject({status: '500'})
    }, 2000)
  });
}

async function addCredentials(sendRequestA: boolean, sendRequestB: boolean) {
  try {
    // This should be parallel
    if (sendRequestA) {
      try {
        await addCredentialA()
        console.log('Successfully added credential A')
      } catch (e) {
        console.log('Something wrong with credential A', e)
        throw e
      }
    } 

    // This should be parallel
    if (sendRequestB) {
      try {
        await addCredentialB()
        console.log('Successfully added credential B')
      } catch (e) {
        console.log('Something wrong with credential B', e)
        throw e
      }
    } 

    console.log('Succesfully added two credentials')
  } catch (e) {
    console.log('There was problem with adding credentials')
    console.log(e)
  }
}

addCredentials(true, true)

TypeScript playground

I am trying to deploy a full-stack node project on Bluehost via c panel.
How do I install Node.js in the c panel in the first place ?
Could someone please provide a resource/article to refer ?

function test(event)
{
    document.getElementById('ausgabe').innerHTML =
    'test';
}

document.addEventListener("DOMContentLoaded", (event) => {
    document.getElementById("input1").addEventListener("submit", (event) => {
        test(event);
    })
})

Clicking the Button does basically nothing. The website doesn’t change when I’m clicking it.

i have a json file as a server, i need filter the data json when i click in a button, example, in the Navbar i have:

const NavBar = ({setSearchValue, setType}) => {
  const handleType = (heroType) =>{
    setType(heroType)
    }

  return (
// this input is ok, i can search data from here
              <input id='searchInput' placeholder='Search' onChange={(event) => {setSearchValue(event.target.value)}}/>
//these are the buttons
            <Nav.Link onClick={() => handleType('All')}>All Heroes</Nav.Link>
            <Nav.Link onClick={() => handleType('Flying')} >Flying Heroes</Nav.Link>
            <Nav.Link onClick={() => handleType('Flightless')}>Flightless Heroes</Nav.Link>

and this is where i need to show it

  //import Navbar
        import NavBar from "./NavBar";
        
        const Home = () => {
    // saved the data i need to show 
          const [content, setContent] = useState();
    // saved the searchvalue of navbar, its ok.
          const [searchValue, setSearchValue] = useState("");
    // i tried save the button data here, next with a IF function i tried to show it, no work
          const [type, setType] = useState("Flying");
        
          useEffect(() => {
// get json dta
            const getData = async () => {
              const response = await db.get("data");
        
              let data = response.data.filter((val) => {
// if no searchValue, return all
                if (searchValue === "") return val;
//if searchVale, return coincidences
                else if (val.nombre.toLowerCase().includes(searchValue.toLowerCase()))
                  return val;
              });
        // returns bootstrap rows depending on number of elements
              const rows = [...Array(Math.ceil(data.length / 3))];
              const imagesRows = rows.map((row, idx) =>
                data.slice(idx * 3, idx * 3 + 3)
              );
        //saved all in setContent
              setContent(
                //code
                )
            getData();
          }, [searchValue]);
        
          return (
            <>

              <NavBar setSearchValue={setSearchValue} setType={setType} />
//show content
              <Container>{content >= 0 ? <p>No results</p> : content}</Container>
            </>
          );
        };

I’ve tried a lot of things, i think i need change a lot of code i a want this work.
Any help would be extremely appreciated.

I’m trying to have the Accordion MUI component NOT move and NOT apply top and bottom margins to summary elements while it is in the expanded mode. I add this code to the summary element but that’s not working. what do you offer me? it worth mentioning that it works on the first accordion but not the others!!!!!!!!!!

sx={{
   "&.Mui-expanded": {
   minHeight: 0,
   margin: '12px 0',
   },
   "& .MuiAccordionSummary-content.Mui-expanded": {
   margin: 0,
   }
}}

I want to change an iframe src when you click the menu bar. My menu bar is in another component, on which you are able to change the language in a dropdown menu. I want to change the iframe src depending on which language was clicked.

Here is my HTML menu wth a function named ‘updateSrc()’:

<nav>

<div class="select-box">
                      <div class="select-box__current" tabindex="1">
                        <div class="select-box__value" (click)="updateSrc(first_url)">
                          <input class="select-box__input" type="radio" id="0" value="1" name="Ben" checked="checked"/>
                          <p class="select-box__input-text">Es</p>
                        </div>
                        <div class="select-box__value" (click)="updateSrc(second_url)">
                          <input class="select-box__input" type="radio" id="1" value="2" name="Ben"/>
                          <p class="select-box__input-text">En</p>
                        </div>
                        <div class="select-box__value">
                          <input class="select-box__input" type="radio" id="2" value="3" name="Ben"/>
                          <p class="select-box__input-text">It</p>
                        </div>
                        <img class="select-box__icon" src="http://cdn.onlinewebfonts.com/svg/img_295694.svg" alt="Arrow Icon" aria-hidden="true"/>
                      </div>

                      <ul class="select-box__list">
                        <li>
                          <label class="select-box__option" for="0" aria-hidden="aria-hidden">Es</label>
                        </li>
                        <li>
                          <label class="select-box__option" for="1" aria-hidden="aria-hidden">En</label>
                        </li>
                        <li>
                          <a href="https://esourcecapital.it/">
                          <label class="select-box__option" aria-hidden="aria-hidden">It</label>
                          </a>
                        </li>
                      </ul>
                    </div> 

</nav>

Here is my TS file:

import { Component, OnInit } from '@angular/core';
import { DomSanitizer, SafeResourceUrl, SafeUrl } from '@angular/platform-browser';

@Component({
  selector: 'app-header',
  templateUrl: './header.component.html',
  styleUrls: ['./header.component.scss']
})
export class HeaderComponent implements OnInit {

  menu:boolean = false;

  constructor(private translate: TranslateService,
              private sanitizer: DomSanitizer)
    {  }

  ngOnInit(): void {

  }

  first_url = "https://www.youtube.com/embed/4oP20QZxahk";
  second_url = "https://www.youtube.com/embed/Q_ZPBqVF0_8";
  current_url: SafeUrl;

  updateSrc(url) {
    this.current_url=this.sanitizer.bypassSecurityTrustResourceUrl(url);
  }


}

And also the iframe I want to change is in another component as I said before:

<div class="center">
                            <iframe width="640" height="360" id="frame" frameborder="0" src="https://www.youtube.com/embed/4oP20QZxahk" [src]="current_url" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

<!--                            <div class="pairs">
                                <button md-button (click)="updateSrc(first_url)" id="first" class="top-link">Video en español</button>
                                <button md-button (click)="updateSrc(second_url)" id="second" class="top-link">Video in english</button>
                            </div> -->
                        </div>

if everything were in the same component it would work, but the menu is in one component and the iframe tag in another.

I’m using quite a new technology called Astro (https://astro.build/) to build a completely static, server side rendered page, shipping zero JS.

I have a page with a form that is a simple text input, when the user fills this in and clicks the submit button, it sends a GET request to an astro page. The url will look something like this ….

/?search=1234

What I want to be able to do is get access to that querystring parameter in order to redirect my user to another static page /1234.

I am trying to access the quesrystring parameter with Astro.request, but the object, including the parameters attribute is completely empty.

Is there anyway to access the querystring parameters from a .astro page/file?

<input type="number" name="as[0][qnt1]" class="form-control valid" aria-invalid="false">
<input type="number" name="as[0][qnt2]" class="form-control valid" aria-invalid="false">
<input type="number" name="as[0][tot]" class="form-control valid" aria-invalid="false" disabled>

<input type="number" name="as[1][qnt1]" class="form-control valid" aria-invalid="false">
<input type="number" name="as[1][qnt2]" class="form-control valid" aria-invalid="false">
<input type="number" name="as[1][tot]" class="form-control valid" aria-invalid="false" disabled>

ecc

Question:

how can I go about creating a subtraction between the two fields?

I create an library for my REST API and want to send for my customers to use it, but before it I want to create an API KEY (which must be generated in main app) which must be pass to my library in the main class constructor. And right now i have a question, what is the best way to generate API KEY? Right now i create this key as JWT like below:

return jwt.sign(payload, "SECRET KEY");

but JWT is very very long, and I want to create key which will be much shorter that JWT. How is the best approach to generate KEYS? How for example Github generate API KEY for his REST API?

thanks for any help!

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I have 2 js files:
utils.js:

class ElementPart
{
    constructor(text)
    {
        this.text = text;
    }
}

elem.js

const btn = document.querySelector('.elem_btn');

btn.addEventListener("click", () =>
{
    const p = new ElementPart("aaaa");
    console.log(p);
})

When I load the page I get the following error:

Uncaught SyntaxError: Unexpected identifier utils.js:1

And when I click on the button:

Uncaught ReferenceError: ElementPart is not defined
    at HTMLButtonElement.<anonymous> (elem.js:5)
(anonymous) @ elem.js:5

I load the files on the html file like this:

 <script src="/utils.js"></script>
 <script src="/createelem.js"></script>

I currently have the following code:

const renderModal = location.state?.modal ?? isModal ?? false;

const FormComponent = renderModal ? FormModal : Default;

which checks if renderAsModal is true & then returns the Modal component if so (if not, default component)

But now I have another possible modal, which I can check for like so:

const renderCustomModal: boolean =
   location.state?.modal ?? isModal ?? form.key === "UniqueKey" ?? false;

How can I update my FormComponent assignment to check for renderCustomModal as well so my CustomModal can be included in the 3 React components that can be returned? Any helpful links/ best practises would be really appreciated.

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I have to convert date format of “2021-11-30 00:00:00.0” to MM/dd/yyyy

Please help me in this.

Thanks in advance