Correction of the tofixed () method in the system using JavaScript

0.009.tofixed (2) should have returned the result of 0.01, But it returns a 0.00 error. This is a bug in this method, and this method has a high requirement on the JS version of the client, at least this method cannot be used in ie5.0, so I wrote the above correction. Code And solved the bug. If you want to completely use this custom method to replace the system method with bugs, you only need to remove the if judgment on the outermost layer.

// By meizz

If (typeof (number. Prototype. tofixed )! = "Function ")
{

Number. Prototype. tofixed = function (d)
{

VaR S = This + "";
If (! D) d = 0;
If (S. indexof (".") =-1) S + = ".";
S + = new array (D + 1). Join ("0 ");
If (New Regexp ("^ (-| \\+ )? (\ D + (\. \ D {0, "+ (D + 1) + "})?) \ D * $ "). test (s ))
{

VaR S = "0" + Regexp. $2, PM = Regexp. $1, A = Regexp. $3. length, B = true;
If (A = d + 2 ){
A = S. Match (/\ D/G );
If (parseint (A [A. Length-1])> 4)
{

For (VAR I = A. Length-2; I> = 0; I --){
A [I] = parseint (A [I]) + 1;
If (A [I] = 10 ){
A [I] = 0;
B = I! = 1;

} Else break;

}

}
S =. join (""). replace (New Regexp ("(\ D +) (\ D {" + D + "}) \ D $"), "$1. $2 ");

} If (B) S = S. substr (1 );
Return (PM + S). Replace (/\. $ /,"");

} Return this + "";

};

}