JavaScript StringBuilder class implements _javascript techniques

Copy Code code as follows:

Initializes a new instance of the StringBuilder class
and appends the given value if supplied
function StringBuilder (value)
{
This.strings = new Array ("");
This.append (value);
}
Appends the given value to the "end of" this instance.
StringBuilder.prototype.append = function (value)
{
if (value)
{
This.strings.push (value);
}
}

Clears the string buffer

StringBuilder.prototype.clear = function ()
{
This.strings.length = 1;
}

Converts this is instance to a String.
StringBuilder.prototype.toString = function ()
{
Return This.strings.join ("");
}

The code looks simple and straightforward. is actually implemented with Array,push,join, and the following is how to use the class

Copy Code code as follows:

Create a StringBuilder
var sb = new StringBuilder ();
Append some text
Sb.append ("Some of those preparing for international");
Sb.append ("Exams such as the TOEFL");
Sb.append ("Need extra practice for the listening section");
Get the full string value
var s = sb.tostring ();
alert (s);

Very simple, do not need too much description. If you're in. NET with StringBuilder, you will also know how to use it here.