Is this.init = function() called every time file is loaded?

I can't find a definitive answer if an init function is called automatically when the file is loaded. Is this a built-in part of JS/Jquery, or am I missing where it's getting called from in some location of another file?

If it is b开发者_运维问答eing called automatically, is this reoccurring every time the file is loaded?

Example of the particular setup:

ExampleClass = function()
{
   this.init = function()
   {
          //...
   }
}

no init is not called automatically when file is loaded.

Something else is calling it, that is not a behavior of javascript.

Init is called when DOM is ready, not called default or automatically when file is loaded.

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