Call function with array of parameters

Question

Is there a way of doing this without altering the function?

function foo(bar1, bar2, bar3)
{
    return bar1 + bar2 + bar3;
}
var array = [1, 2, 3];
console.log(foo(array)); //6

ascii-lime · Accepted Answer · 2012-01-06 18:13:47Z

up vote 11 down vote accepted

console.log(foo.apply(null, array));

edited Jan 6 at 18:13

answered Nov 24 '11 at 9:06

ascii-lime
29.3k32856

	Demo: jsfiddle.net/nTeUG – Jared Farrish Nov 24 '11 at 9:08
	I don't think it makes much sense to set the `this` value to the function itself. Although it doesn't make any difference, I'd say setting it to e.g. `null` is more semantical. – pimvdb Nov 24 '11 at 9:08
	Demo updated: jsfiddle.net/nTeUG/1 – Jared Farrish Nov 24 '11 at 9:11
	@pimvdb In function this usually points to window (in browser obviously), so I guess calling `foo.apply(window, array)` should be the natural choice. – Lolo Nov 24 '11 at 9:13
	@Lolo That makes sense :) I changed it again. – ascii-lime Nov 24 '11 at 9:14

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