Which method of checking if a variable has been initialized is better/correct? (Assuming the variable could hold anything (string, int, object, function, etc.))  if (elem) { // or !elem   or  if (typeof(elem) !== 'undefined') {   or  if (el...
I have a quick question about tinyMCE. I have a textarea, with id="mainbuffer", and the function tinyMCE.get(id).setContent(data).  ONLY works when it is called onclick="function()" from a link and does not work when I load the page....
I read about a static constructor in typescript and tried it myself but it doesn't work. I want to initialize a static variable by that - The method shall only be called once.  Error: 'static' modifier cannot appear on a constructor decla...
This pattern is quite common; I've seen it in a few places including the jQuery source code:  var arr = "word1 word2 word3".split(" ");   as an alternative to the 'normal' methods of array initiliasation:  var arr1 = [ &#...
I am aware that most common practice would be to put var a,b; on the top, but I want to extract every possible character (after running on JS Uglify), and it seems they don't delete unnecessary var initializing  I want to know if any of the follo...
I'd like to initialize an object in javascript calling directly a method that belongs to it:    var obj = (function(){       return{           init: function(){               console.log("initialized!");               return this;...
I want to create a Uint8Array with 8 elements.  I tried this  var myarr = new Uint8Array(255,255,255,255,40,92,143,2);   but when I run  myarr.length   I get back "255" when I expect the answer would be "8".  I assume I'm doing so...
oops - incorrectly posted  apologize to all.  misread my code and misinterpreted its behavior.    source code  have page in which variable shoe is initialized twice, once in index.html and once in an included script.js:  index.html  <script src=&#...
What the instance init in browser console mean ?    If anyone has any idea on how to deal with this problem, I would really appreciate it.  Here is an attachment of the code that I have while I was doing a console.log  init [input#TreatmentDefault,...
I am having trouble printing a simple array list in javascript. undefined is being printed before only two array items. please consider the code below;    function buildList(){     var box = document.getElementById("box"); 	var startList  = &...

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