aaac7fed
 liuqimichale
add
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"use strict";
var numberIsNaN = require("../../number/is-nan")
, toPosInt = require("../../number/to-pos-integer")
, value = require("../../object/valid-value")
, indexOf = Array.prototype.indexOf
, objHasOwnProperty = Object.prototype.hasOwnProperty
, abs = Math.abs
, floor = Math.floor;
module.exports = function (searchElement /*, fromIndex*/) {
var i, length, fromIndex, val;
if (!numberIsNaN(searchElement)) return indexOf.apply(this, arguments);
length = toPosInt(value(this).length);
fromIndex = arguments[1];
if (isNaN(fromIndex)) fromIndex = 0;
else if (fromIndex >= 0) fromIndex = floor(fromIndex);
else fromIndex = toPosInt(this.length) - floor(abs(fromIndex));
for (i = fromIndex; i < length; ++i) {
if (objHasOwnProperty.call(this, i)) {
val = this[i];
if (numberIsNaN(val)) return i; // Jslint: ignore
}
}
return -1;
};
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