Category: javascript

Category Added in a WPeMatico Campaign

Memory leak in getImageData and passing to worker

In my main page it has a timer(1 second) to pass data to worker. The code is attached, the worker does nothing.

The memory in task manager keeps increasing very fast, how to avoid the memory leak?

let canvas = document.getElementById('mycanvas');
let video = this.runtime.ioDevices.video.provider.video;
canvas.getContext('2d').drawImage(video, 0, 0, 640, 480);
let canvas_data = canvas.getContext('2d').getImageData(0, 0, 640, 480).data
window.myWorker.postMessage({ type: "test", file: file, data: canvas_data });

Get the content of an input? [duplicate]

I have a question:

How do I get the exact content of an input. I have two inputs: type number. Now I want to get the numbers out of the two inputs and check which one is higher. I know how to check which one is higher. I just need to get the content of the inputs. Please tell me an easy way.

Why does the javascript variable name only print once in this html? [duplicate]

When I execute the following code, why does the variable name which is assigned to output only print the first time I use it…not every time I used it?

 <!DOCTYPE html>
<html>
<head>
<title>Test</title>
<script>
window.onload = function(){
    var name = prompt("What's your name?");
    var lengthOfName = name.length

    document.getElementById('output').innerHTML = name;
};
</script>

</body>
</head>
<body>

<h1>My First Heading</h1> <p id="output" </p>
<p>My first paragraph.</p> <p id="output" </p>
<p>My second paragraph.</p>
<p id="output" </p>

</body>
</html>

when i run it…this is the what it looks like

My First Heading dodo bird

My first paragraph.

My second paragraph.

I would expect it to look like this

My First Heading dodo bird

My first paragraph. dodo bird

My second paragraph. dodo bird

creating an object with hours through the user interface

I am having trouble creating the right object. I have a calendar that stores the hours. He wants timeTable to hold such an object, for example

"timeTable":{
    "0": [{"from":"08:00","to":"12:00"}, {"from":"14:00","to":"18:00"}],
    "1": [{"from":"08:00","to":"16:00"}]
  }

How, after clicking the save button, send such an object to:

 timeTable: Map<number, Array<HourScheduleDefinitionModel>>;

interface:

interface HourScheduleDefinitionModel {
  from: string;
  to: string;
}

https://stackblitz.com/edit/angular-ivy-e92ezv?file=src%2Fapp%2Fapp.component.ts

Mongoose cast failed

Does anyone see what might be the problem ?

I feel like I am respecting each entries type, what’s wrong ?

{
  "message": "Product validation failed: subcategory.0: Cast to [string] 
failed for value ... (type string) at path "subcategory.0""
}

data.js

Understand DOM javascript?

I have this piece of code but I dont understand the presence of:” subTotal = subTotalElement.textContent “

function updateSubtotal(product) {
  console.log('Calculating subtotal, yey!');
  // const price
  // const quantity
  const price = product.querySelector('.price span');
  const quantity = product.querySelector('.quantity input');
  const subTotalElement = product.querySelector('.subtotal span'); //HTML element

   

  const subTotal = price.textContent * quantity.value; //input work with  input.value

 subTotal = subTotalElement.textContent ; //to change the HTML
  return subTotal;
}

Div with sprite-animation doesn’t change properly during window.resize event

Soo, I am trying to imitate 3d-model rotation with sprite-sheet. I found a perfect example on Codepen, but it was not responsive. What I tried to do is to write div’s, container’s and spritesize (in script) in ‘VW’. And then it is being checked on window.resize event. It does work, but unfortunately not DURING window resize. I put my snippet and three pictures in post — 1) I opened website and everything is perfect 2) I started to change the size of my browser window and as you can see something is wrong 3) Now I tried to “rotate” the “model” with resized window and all is fine again. Sorry, if the question is weird, I am only a beginner 🙁 the first image, the second and the third

var spriteslider = document.createElement('div');
var clientWidth = document.getElementById('spritetarget').clientWidth;

document.body.appendChild(spriteslider);

spriteslider.slider = document.getElementById('spriteslider');
spriteslider.sprite = document.getElementById('spritetarget');
spriteslider.spritesize = clientWidth;
spriteslider.spritecount = 20;
spriteslider.pixelsperincrement = 5;
spriteslider.multiplier = spriteslider.lastmultiplier = 0;

Draggable.create(spriteslider, {
    type: 'x',
  trigger: spriteslider.slider,
  bounds: { minX:0, maxX:0, minY:0, maxY:0 },
      edgeResistance: 0,
  cursor: 'e-resize',
  onDrag: function() {
    if (this.isDragging) {
      var t = this.target;
      t.multiplier = Math.floor(this.x / t.pixelsperincrement) + t.lastmultiplier;
      // TweenLite.set(t.sprite, { backgroundPosition: (-t.multiplier * t.spritesize) + "px 0"});
      TweenLite.set(t.sprite, { backgroundPosition: (-t.multiplier * t.spritesize) + "px 0"});

    }
  },
      onDragEnd: function() {
    var t = this.target;
    t.lastmultiplier = t.multiplier % t.spritecount;
  }
});

window.addEventListener('resize', function(event) {
    var clientWidth = document.getElementById('spritetarget').clientWidth;
    spriteslider.spritesize = clientWidth;
    TweenLite.set(t.sprite, { backgroundPosition: (-t.multiplier * t.spritesize) + "px 0"});
}, true);
body {
  text-align: center;
  font: normal 12px sans-serif;
  background: #000000;
  color: #91E600;
}
.spriteslider {
  margin: 20px auto;
  padding: 60px;
  width: 20vw;
  height: 20vw;
  background: #FCFEFC;
  border-radius: 5px;
}
#spritetarget {
  width: 20vw;
  height: 20vw;
  background-size: cover;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/29123/heart.png); /* horizontal spritesheet - image from http://preloaders.net */
  background-repeat: repeat-x;
}
<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>CodePen - GSAP Draggable 360° sprite slider</title>
  <link rel="stylesheet" href="./style.css">

</head>
<body>
<!-- partial:index.partial.html -->
<div class='spriteslider' id='spriteslider'>
  <div id='spritetarget'></div>
</div>

<p>Drag the box left/right to control the sprite's position.</p>
<!-- partial -->
  <script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/latest/TweenMax.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/latest/utils/Draggable.min.js'></script><script  src="./script.js"></script>

</body>
</html>

Tagify – How to add new tags

I am using tagify for including tags but the issue is when I try to add a new tag it is cleared automatically.

I want it to add a new tag if the new value is typed in.

HTML Code

<input name='tags' class='some_class_name' placeholder='write some tags' value='css, html, javascript'>

JS Code

var input = document.querySelector('input[name="tags"]');

var whitelist = ["A# .NET", "A# (Axiom)", "A-0 System", "A+", "A++", "ABAP", "ABC", "ABC ALGOL", "ABSET", "ABSYS", "ACC", "Accent", "Ace DASL", "ACL2", "Avicsoft", "ACT-III", "Action!", "ActionScript", "Ada", "Adenine", "Agda", "Agilent VEE", "Agora", "AIMMS", "Alef", "ALF", "ALGOL 58", "ALGOL 60", "ALGOL 68", "ALGOL W", "Alice", "Alma-0", "AmbientTalk", "Amiga E", "AMOS", "AMPL", "Apex (Salesforce.com)", "APL", "AppleScript", "Arc", "ARexx", "Argus", "AspectJ", "Assembly language", "ATS", "Ateji PX", "AutoHotkey", "Autocoder", "AutoIt", "AutoLISP / Visual LISP", "Averest", "AWK", "Axum", "Active Server Pages", "ASP.NET", "B", "Babbage", "Bash", "BASIC", "bc", "BCPL", "BeanShell", "Batch (Windows/Dos)", "Bertrand", "BETA", "Bigwig", "Bistro", "BitC", "BLISS", "Blockly", "BlooP", "Blue", "Boo", "Boomerang", "Bourne shell (including bash and ksh)", "BREW", "BPEL", "B", "C--", "C++ – ISO/IEC 14882", "C# – ISO/IEC 23270", "C/AL", "Caché ObjectScript", "C Shell", "Caml", "Cayenne", "CDuce", "Cecil", "Cesil", "Céu", "Ceylon", "CFEngine", "CFML", "Cg", "Ch", "Chapel", "Charity", "Charm", "Chef", "CHILL", "CHIP-8", "chomski", "ChucK", "CICS", "Cilk", "Citrine (programming language)", "CL (IBM)", "Claire", "Clarion", "Clean", "Clipper", "CLIPS", "CLIST", "Clojure", "CLU", "CMS-2", "COBOL – ISO/IEC 1989", "CobolScript – COBOL Scripting language", "Cobra", "CODE", "CoffeeScript", "ColdFusion", "COMAL", "Combined Programming Language (CPL)", "COMIT", "Common Intermediate Language (CIL)", "Common Lisp (also known as CL)", "COMPASS", "Component Pascal", "Constraint Handling Rules (CHR)", "COMTRAN", "Converge", "Cool", "Coq", "Coral 66", "Corn", "CorVision", "COWSEL", "CPL", "CPL", "Cryptol", "csh", "Csound", "CSP", "CUDA", "Curl", "Curry", "Cybil", "Cyclone", "Cython", "Java", "Javascript", "M2001", "M4", "M#", "Machine code", "MAD (Michigan Algorithm Decoder)", "MAD/I", "Magik", "Magma", "make", "Maple", "MAPPER now part of BIS", "MARK-IV now VISION:BUILDER", "Mary", "MASM Microsoft Assembly x86", "MATH-MATIC", "Mathematica", "MATLAB", "Maxima (see also Macsyma)", "Max (Max Msp – Graphical Programming Environment)", "Maya (MEL)", "MDL", "Mercury", "Mesa", "Metafont", "Microcode", "MicroScript", "MIIS", "Milk (programming language)", "MIMIC", "Mirah", "Miranda", "MIVA Script", "ML", "Model 204", "Modelica", "Modula", "Modula-2", "Modula-3", "Mohol", "MOO", "Mortran", "Mouse", "MPD", "Mathcad", "MSIL – deprecated name for CIL", "MSL", "MUMPS", "Mystic Programming L"];

var tagify = new Tagify(input, {
      whitelist:whitelist,
      maxTags: 10,
      dropdown: {
        maxItems: 20,          
        classname: "tags-look", 
        enabled: 0,            
        closeOnSelect: false   
      }
    })

Example link -> https://codepen.io/vsync/pen/bGpdVMW

how to make variable accessible in requirejs callback function

I have a piece of code with requirejs

var path = this.formatPath(path);
require([path], function (template) {

//....code here

});

And I’d like to print the path inside the requirejs callback function.

Something like this

var path = this.formatPath(path);
require([path], function (template) {

//console.log(path)

});

However because the callback function is in a different scope, I can’t access it.

How do I pass the path variable in the callback function?

Filter table from database by 2 filed and from 1 table

I learn about the script autodidact and only PHP and Mysql and i don't know how to tell the things about the name part of script or syntrac or anything i just know how to use it and hard to for me find my question from goolge, please understand me, sorry.

There is posible to filter 2 field ‘firstname’ and ‘year’ from 1 database?
Condition 1 : When i type firstname by input only, it work, start from refresh first if not go to condition 3.
Condition 2 : When i select year by select option only, it work, start from refresf first if not go to condition 3.
Condition 3 : When i select year and type by input, it doesn’t work.

What i need is, when i select year 2009 and than when i just type ‘a’ Abdul and Agus selected from database, should only abdul selected from database.
I think the problem is my PHP and MYsql so i focus on them because i just know about them and forget about javascript.
Here my database ‘directory’ :
| firstname | status | year |
|:——— |:——:| :—-:|
| Agus | Alumni | 2008 |
| Abdul | Alumni | 2009 |
| David | Alumni | 2009 |
| Jelita | Student| |

index.php

<html>
<head>
<script>
function sortResult(str)
{
if (str=="")
  {
  document.getElementById("result").innerHTML="";
  return;
  } 
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById("result").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","results.php?q="+str,true);
xmlhttp.send();
}
</script>
</head>
<body>

<form>
<select name="sortby" onchange="sortResult(this.value)">
            <option>Tahun</option>
            <option value="2008">2008</option>
            <option value="2009">2009</option>
</select>
<input name="sortby" onKeyUp="sortResult(this.value)" type="text">
</form>
<br>
<div id="result"><b>Results will be listed here.</b></div>

</body>
</html>

results.php

<?php
$q = $_GET['q'];

$con = mysqli_connect('localhost','root','','school');
if (!$con)
  {
  die('Could not connect: ' . mysqli_error($con));
  }

mysqli_select_db($con,"database"); 
$sql="SELECT * FROM directory where
status='Alumni' and tahun Like '%".$q."%' or
status='Alumni' and firstname Like '%".$q."%'";

$result = mysqli_query($con,$sql);

echo "<table border='1'>
<tr>
<th>ID</th>
<th>Fistname</th>
<th>Title</th>
<th>Graduation</th>
</tr>";

while($row = mysqli_fetch_array($result))
  {
  echo "<tr>";
  echo "<td>" .$row['noid']. "</td>";
  echo "<td>" .$row['firstname']. "</td>";
  echo "<td>" .$row['status']. "</td>";
  echo "<td>" .$row['tahun']. "</td>";
  echo "</tr>";
  }
echo "</table>";

mysqli_close($con);
?>