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32 lines
1012 B
32 lines
1012 B
if (!String.prototype.startsWith) {
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Object.defineProperty(String.prototype, 'startsWith', {
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enumerable: false,
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configurable: false,
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writable: false,
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value: function (searchString, position) {
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position = position || 0;
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return this.indexOf(searchString, position) === position;
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}
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});
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}
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if (!String.prototype.endsWith) {
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Object.defineProperty(String.prototype, 'endsWith', {
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enumerable: false,
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configurable: false,
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writable: false,
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value: function (searchString, position) {
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position = position || this.length;
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position = position - searchString.length;
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var lastIndex = this.lastIndexOf(searchString);
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return lastIndex !== -1 && lastIndex === position;
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}
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});
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}
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if(!('contains' in String.prototype))
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{
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String.prototype.contains = function(str, startIndex) {
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return -1 !== String.prototype.indexOf.call(this, str, startIndex);
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};
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} |