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21 lines
840 B
JavaScript
21 lines
840 B
JavaScript
6 years ago
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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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var toLength = require('./_to-length');
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var context = require('./_string-context');
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var ENDS_WITH = 'endsWith';
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var $endsWith = ''[ENDS_WITH];
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$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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var endPosition = arguments.length > 1 ? arguments[1] : undefined;
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var len = toLength(that.length);
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var end = endPosition === undefined ? len : Math.min(toLength(endPosition), len);
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var 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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