I've been trying to learn about closures, but one thing still perplexes me. If I have the following code:  var add = (function () {     var counter = 0;     return function () {return counter += 1;} })();  add(); add(); add();  // Returns "3&...
In my index.html file (before closing body tag), I want a function to self-invoke itself when the page is loaded. However, I am having issues when the function (here, setUp) is defined in an external file.  If I copy-paste the setUp function in Index...
I'm trying to understand closures and am looking at the W3Schools javascript tutorial. This is one example they give by making a counter.   <body>  <p>Counting with a local variable.</p>  <button type="button" onclick...
Only functions expressions can be immediately invoked:  (function () {     var x = "Hello!!";      // I will invoke myself })();   But not function declarations? Is this because function declarations are hoisted and already execute immediatel...
I'm a little confused.  Everywhere i look, people say that i should use self invoking functions for scoping reasons, to avoid global namespace pollution.  But in this aspect, self invoking function seems to act identically to regular function, as...
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In certain circumstances, having more than one self-invoking function in a single JavaScript file provokes an error. Getting the second function to return a value averts the error.  I have a barebones HTML file...  <script src="two.js">...

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