semicolon usage in javascript

Question

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Why does the JavaScript need to start with “;” ?

I've been looking at some JavaScript in the new Microsoft patterns and practises project Silk on codeplex and I've come across something I've never seen before...

What is the the purpose of the semicolon before the self executing function containing a jQuery plugin?

; (function (mstats, $) {
    // blah blah blah...
} (this.mstats = this.mstats || {}, jQuery));

That's answered in this thread: http://stackoverflow.com/questions/2481543/why-does-the-javascript-need-to-start-with — wsanville, Mar 12 '11 at 19:58
Cheers.... I had a look around first but couldn't find an example. — James South, Mar 12 '11 at 20:07

score 7 · Accepted Answer · answered Mar 12 '11 at 19:57

7

It's to avoid any potential problems if you concatenate/compress/minify your javascript files into a single one.

answered Mar 12 '11 at 19:57

Darin Dimitrov

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score 0 · Answer 2 · answered Mar 12 '11 at 19:59

0

This is just a coding practice to make sure that last statement had a semicolon at its end and as told by Darin

answered Mar 12 '11 at 19:59

Nitin Nizhawan

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semicolon usage in javascript

2 Answers2