摘要：
script type="text/javascript" Array.prototype.indexOf = function (str) { for (var i = 0; i this.length; i++) { if (str == this[i]) { return i; } } return -1; }/script 阅读全文
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摘要：
script type="text/javascript" Array.prototype.indexOf = function (str) { for (var i = 0; i this.length; i++) { if (str == this[i]) { return i; } } return -1; }/script 阅读全文
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