JavaScript simulate StringBuilder

參考了code project其中有一篇關於javascript模擬StringBuilder的作法

function StringBuilder(value) {

this.strings = new Array("");

this.Append(value);

}

StringBuilder.prototype.Append = function(value) {

if (value) {

this.strings.push(value);

}

return this; /* chain capability */

}

StringBuilder.prototype.Clear = function () {

this.strings.length = 1;

}

StringBuilder.prototype.ToString = function() {

return this.strings.join("");

}