Formatting function code for js numerical items_javascript skills

Copy code The code is as follows:

//------------- ----------------------------------
//Delete thousandth points.

//------------------------------------------------ --
function removeComma(number) {
var num = number.replace(new RegExp(",","g"),"");
if(/^[- ]?[0 -9] (.[0-9] )?$/.test(num)) {
return num;
} else {
return number;
}
}

//---------------------------------------------
//Add thousandths.
//---------------------------------------------
function addKannma(number) {

var num = number.replace(new RegExp(",","g"),"");

// Positive and negative sign processing
var symble = "";
if(/^([- ]).*$/.test(num)) {
symble = num.replace(/^([- ]).*$ /,"$1");
num = num.replace(/^([- ])(.*)$/,"$2");
}

if(/^[ 0-9] (.[0-9] )?$/.test(num)) {
var num = num.replace(new RegExp("^[0] ","g"),"") ;
if(/^./.test(num)) {
num = "0" num;
}

var decimal = num.replace(/^[0-9 ] (.[0-9] )?$/,"$1");
var integer= num.replace(/^([0-9] )(.[0-9] )?$/," $1");

var re=/(d )(d{3})/

while(re.test(integer)){
integer　=integer.replace(re ,"$1,$2")
}
return symble integer　 decimal;

} else {
return number;
}
}