JS代码如下:
/**
* 解决了IE8不支持数组的indexOf方法
*
* @param
* @arrange (512.笔记) jb51.cc
**/
if (!Array.prototype.indexOf) {
Array.prototype.indexOf = function (elt /*,from*/) {
var len = this.length >>> 0;
var from = Number(arguments[1]) || 0;
from = (from < 0)
? Math.ceil(from)
: Math.floor(from);
if (from < 0)
from += len;
for (; from < len; from++) {
if (from in this &&
this[from] === elt)
return from;
}
return -1;
};
}
// 来自:编程之家 jb51.cc(jb51.cc)