I was reading some posts about closures and saw this everywhere, but there is no clear explanation how it works – everytime I was just told to use it…: // Create a new anonymous function, to use as a wrapper (function(){ // The variable that would, normally, be global var msg = “Thanks for visiting!”; … Read more
In javascript, when would you want to use this: (function(){ //Bunch of code… })(); over this: //Bunch of code… 20 s 20 It’s all about variable scoping. Variables declared in the self executing function are, by default, only available to code within the self executing function. This allows code to be written without concern of … Read more
I have been reading a lot of Javascript lately and I have been noticing that the whole file is wrapped like the following in the .js files to be imported. (function() { … code … })(); What is the reason for doing this rather than a simple set of constructor functions? 9 s 9
I’ve been looking for information about immediately invoked functions, and somewhere I stumbled on this notation: +function(){console.log(“Something.”)}() Can someone explain to me what the + sign in front of the function means/does? 4 s 4
I used to know what this meant, but I’m struggling now… Is this basically saying document.onload? (function () { })(); 29 s 29 It’s an Immediately-Invoked Function Expression, or IIFE for short. It executes immediately after it’s created. It has nothing to do with any event-handler for any events (such as document.onload). Consider the part … Read more
