JavaScript で日付形式変換を実装_javascript スキル

<頭>


<スクリプト>
window.onload = function(){
    var aLaydate = document.getElementsByClassName("date");
    for(var i = 0;i     {
        aLaydate[i].onchange = function(){
            var dateValue = this.value;
            dateValue = dateValue.replace(/。/g,"-");
            dateValue = dateValue.replace(/./g,"-");
            if(dateValue.length == 8){
                var temp = dateValue.substring(0,4) "-" dateValue.substring(4,6) "-" dateValue.substring(6,8);
                dateValue = temp;
                console.log(dateValue);
            }
            if(CheckDT(dateValue)){
                this.value = dateValue;
            }
            それ以外
            {
                alert("日期输入错误");
            }
        }
    }
}
 
関数 CheckDT(str)
{
    var r = str.match(/^(d{1,4})(-|/)(d{1,2})2(d{1,2})$/);   
    if(r==null)
    {
        false を返します。   
    }
    それ以外
    {
        var d= 新しい日付(r[1], r[3]-1, r[4]);   
        return (d.getFull Year()==r[1]&&(d.getMonth() 1)==r[3]&&d.getDate()==r[4]);
    }
}