js的StringBuffer类

function StringBuffer(str)
{
???var arr = [];
???str = str || "";
???arr.push(str);
???this.append = function(str1)
???{
???????arr.push(str1);
???????return this;
???};
???this.toString = function()
???{
???????return arr.join("");
???};
};

document.onreadystatechange = function(){
???if(document.readyState == "complete") ???
???{
???????var sb = new StringBuffer();
???????sb.append("Hello,").append("World");
???????alert(sb.toString());
???}
};

js的StringBuffer类

原文地址：http://www.cnblogs.com/yangpeng-jingjing/p/7680748.html