How to terminate the script in JavaScript?

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“exit” functions usually quit the program or script along with an error message as paramete. For example die(…) in php 

die("sorry my fault, didn't mean to but now I am in byte nirvana")

The equivalent in JS is to signal an error with the throw keyword like this:

throw new Error();

You can easily test this:

var m = 100;
throw '';
var x = 100;

x
>>>undefined
m
>>>100

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