22 lines
391 B
JavaScript
22 lines
391 B
JavaScript
var isArrayLike = require('./type/is-array-like');
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var indexOf = function indexOf(arr, obj) {
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if (!isArrayLike(arr)) {
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return -1;
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}
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var m = Array.prototype.indexOf;
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if (m) {
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return m.call(arr, obj);
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}
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var index = -1;
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for (var i = 0; i < arr.length; i++) {
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if (arr[i] === obj) {
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index = i;
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break;
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}
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}
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return index;
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};
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module.exports = indexOf; |