Programmingjavascript

자바스크립트 formatnumber 기능구현

javascript

자바 스크립트 치환방법

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function commaNum(num){
    if (num<0){num*=-1; var minus=true}
    else var minus=false

    var dotPos=(num+"").split(".")
    var dotU=dotPos[0]
    var dotD=dotPos[1]
    var commaFlag=dotU.length%3

    if(commaFlag){
        var out=dotU.substring(0,commaFlag)
    if(dotU.length>3) { out +="," }
    } else  { var out ="" }

    for (var i=commaFlag;i<dotU.length;i+=3){
        out +=dotU.substring(i,i+3)
        if(i<dotU.length-3) out +=","
    }
    if(minus) out = "-" + out
    if(dotD) return out + "." + dotD
    else return out
}
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