摘要：
//封装StringBuilderfunction StringBuilder() { this._string_ = new Array(); }StringBuilder.prototype.Append = function (str) { this._string_.push(str); }StringBuilder.prototype.toString = function () { return this._string_.join(""); }//trim去掉字符串两边的指定字符,默去空格String.prototype.Trim = function (st 阅读全文
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