You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
933 B
28 lines
933 B
"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;
|
|
};
|
|
|