I know that in JavaScript you can do:  var oneOrTheOther = someOtherVar || "these are not the droids you are looking for...";   where the variable oneOrTheOther will take on the value of the first expression if it is not null, undefined, or...
In javascript, if we have some code such as  var a = "one"; var b = q || a; alert (b);   The logical OR operator will assign a's value to b, and the alert will be "one."  Is this limited to assignments only or can we use it everyw...
var width = 10; var data = image.data; var height = 10;  for ( var x = 0; x < width; x++ ) {    for ( var y = 0; y < height; y++ )      var index = 4 * (y * height +  x); // 0      var local_variable = ArbitraryClassInstance.getBrightness(x, y)...
The multiple assignment (or is it called chaining?) that I'm talking about is assignment such as:  a = b = c = 2;   ...after which a, b, and c are all equal to 2;  My question of optimization is, given the following code:  var dom1 = document.get...
Ive got an assignment and am a bit stuck.  Need to match an input string to the values in a constant, but I am matching individual characters.  My constant would be ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUWXYZ'  My input would be, var input = 'A...
Is it possible to use destructuring assignment in a JavaScript class' constructor to assign the instance variables similar to how you can do it to normal variables?  The following example works:  var options = {one: 1, two: 2}; var {one, two} = o...
Why can't I do this:  var fooElement, barElements; if(fooElement = document.getElementById('foo') && barElements = fooElement.getElementsByTagName('bar') && barElements[0] && barElements[0].onclick) {     c...
Hey i dont know if that is possible but i want to set a given variable in js by reference.  What i want to do is, that each time i pass a string to the function addstring that the value of the textfield is added like +=  function addstring(string) {...
I am sure I am doing something silly here:  var addhtml = '<div id="leftbio" class="left-float">' += '<div id="bioname">e["screen_name]</div>' += '<div id="biophoto"><...

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