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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&...This question already has answers here:...
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...
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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...
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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