20 lines
840 B
JavaScript
20 lines
840 B
JavaScript
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// 21.1.3.6 String.prototype.endsWith(searchString [, endPosition])
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'use strict';
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var $export = require('./_export')
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, toLength = require('./_to-length')
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, context = require('./_string-context')
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, ENDS_WITH = 'endsWith'
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, $endsWith = ''[ENDS_WITH];
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$export($export.P + $export.F * require('./_fails-is-regexp')(ENDS_WITH), 'String', {
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endsWith: function endsWith(searchString /*, endPosition = @length */){
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var that = context(this, searchString, ENDS_WITH)
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, endPosition = arguments.length > 1 ? arguments[1] : undefined
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, len = toLength(that.length)
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, end = endPosition === undefined ? len : Math.min(toLength(endPosition), len)
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, search = String(searchString);
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return $endsWith
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? $endsWith.call(that, search, end)
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: that.slice(end - search.length, end) === search;
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}
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});
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