Is there a better way? I have added the following to the String.protoype:
// str.whereIn(['cat', 'dog, 'mouse']);
String.prototype.whereIn = function(stringArray){
var a = stringArray.indexOf(this.valueOf());
return a>-1;
};
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1[Array.some](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/some) for example – Grundy Oct 01 '15 at 17:13
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1What is the expected output? – Richard Hamilton Oct 01 '15 at 17:13
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4also what is wrong with _indexOf_? – Grundy Oct 01 '15 at 17:14
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1In single line without creating new variable `return stringArray.indexOf(this.valueOf()) > -1` – Tushar Oct 01 '15 at 17:16
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The expected return is a boolean. – ssoward Oct 01 '15 at 17:16
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@ssoward You'll get boolean result, the comparison `> -1` returns `true/false` – Tushar Oct 01 '15 at 17:17