Flash as learning: Add a trim () function to Flash

function Flash does not have its own trim () function, only add one, the following is the function code var mys:string= "The front contains a full space \" \ "and ordinary space \" \ ", now remove them";

Trace ("Original string:" +mys);
Trace ("Processed:" +trim (MyS));

function Trim (mystring:string) {//filter before and after spaces
if (Mystring.indexof ("") ==-1 && Mystring.indexof ("") ==-1) {//If there is no space in the string to return directly
return myString;
}
var omystring:string=mystring; Save the original string.
Mystring=replace (MyString, "", ""); Replace full-width spaces with normal spaces for easy handling

Number of spaces at the start of the Var lblanknum:number=0;//
The number of spaces at the end of the Var rblanknum:number=0;//

Calculate the number of spaces from the start position
for (Var i:number=0;i<mystring.length;i++) {
if (Mystring.charat (i)!= "") {
Break
}else{
lblanknum++;
}
}
Calculates the number of spaces in the end position
For (Var i:number= (mystring.length-1); i>0;i--) {
if (Mystring.charat (i)!= "") {
Break
}else{
rblanknum++;
}
}
Return omystring.substring (Lblanknum, (Omystring.length-rblanknum));
}

function replace (s:string,o:string,n:string) {//character substitution functions replace s in O to n
return S=s.split (o). Join (n);
} Output PartThe original string: preceded by a full corner space "" and ordinary Space "", now remove them, after processing: The front contains a full corner space "" and ordinary Space "", now remove them