In javascript, when would you want to use this:
(function(){ //Bunch of code... })(); over this:
//Bunch of code... In javascript, when would you want to use this: (function(){ //Bunch of code… })();
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In javascript, when would you want to use this:
(function(){ //Bunch of code... })(); over this:
//Bunch of code...
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 how variables are named in other blocks of JavaScript code.
For example, as mentioned in a comment by Alexander:
This will first log
3and then throw an error on the nextconsole.logbecausefoois not defined.