c774b69de8
Summary: IE8 doesn't have indexOf on arrays! Reviewers: emily Reviewed By: emily Differential Revision: http://phabricator.khanacademy.org/D3052
19 lines
366 B
JavaScript
19 lines
366 B
JavaScript
function fastContains(list, elem) {
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return list.indexOf(elem) !== -1;
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}
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function slowContains(list, elem) {
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for (var i = 0; i < list.length; i++) {
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if (list[i] === elem) {
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return true;
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}
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}
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return false;
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}
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var contains = Array.prototype.indexOf ? fastContains : slowContains;
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module.exports = {
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contains: contains
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}
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