29 lines
933 B
JavaScript
29 lines
933 B
JavaScript
"use strict";
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var numberIsNaN = require("../../number/is-nan")
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, toPosInt = require("../../number/to-pos-integer")
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, value = require("../../object/valid-value")
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, indexOf = Array.prototype.indexOf
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, objHasOwnProperty = Object.prototype.hasOwnProperty
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, abs = Math.abs
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, floor = Math.floor;
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module.exports = function (searchElement/*, fromIndex*/) {
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var i, length, fromIndex, val;
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if (!numberIsNaN(searchElement)) return indexOf.apply(this, arguments);
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length = toPosInt(value(this).length);
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fromIndex = arguments[1];
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if (isNaN(fromIndex)) fromIndex = 0;
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else if (fromIndex >= 0) fromIndex = floor(fromIndex);
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else fromIndex = toPosInt(this.length) - floor(abs(fromIndex));
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for (i = fromIndex; i < length; ++i) {
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if (objHasOwnProperty.call(this, i)) {
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val = this[i];
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if (numberIsNaN(val)) return i; // Jslint: ignore
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}
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}
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return -1;
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};
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