This question already has an answer here:                           Get all unique values in a JavaScript array (remove duplicates)                                      73 answers                                     I have a very simp...
In order to duplicate an array in JavaScript: which of the following is faster to use?  Slice method  var dup_array = original_array.slice();   For loop  for(var i = 0, len = original_array.length; i < len; ++i)    dup_array[i] = original_array[...
I want a div to be duplicated when a button is clicked. I though something like this; but it's not working.  Can anyone help me?  HTML  <div id="duplicater">  duplicate EVERYTHING INSIDE THIS DIV </div>   JAVASCRIPT  function...
I found a lot of related questions with answers talking about for...in loops and using hasOwnProperty but nothing I do works properly. All I want to do is check whether or not a key exists in an array and if not, add it.  I start with an empty array...
Update  TL;DR: This is potentially a bug in Safari and/or Webkit.  Longer TL;DR: In Safari, after the Fetch API is used to make a GET request, Safari will automatically (and unintentionally) re-run the the request when the page is reloaded even if th...
I have 2 arrays with objects in them such as:  [{"Start": 1, "End": 2}, {"Start": 4, "End": 9}, {"Start": 12, "End": 16}, ... ]   I want to merge the 2 arrays while removing duplicates. Currently, I am...
I´m having troubles with AJAX navigation, the problem is that the javascript files loaded remains in the browser after the new content is loaded even they aren't in the DOM anymore, and they appears as VM files in the browser console and execute...
In class today we were asked to write an algorithm.    Given an array, remove duplicate values:   It should be stable, and shouldn't have to use an inner loop. Should be done in place, as best as possible No use of built in functions (I was only...
I'm fairly new to JavaScript/jQuery, but have made a script to change the background picture.  First Script  The first script version works fine and does the following:   creates a setInterval timer that calls function backgroundChange() to run e...

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