input框只能输入整数

<td><input type="text" value="" onkeyup="NumberCheck(this)"/>td>

    function NumberCheck(t){
        var num = t.value;
        var re=/^\d*$/;
        if(!re.test(num)){
            isNaN(parseInt(num))?t.value=0:t.value=parseInt(num);
        }
    }

 

转载于:https://www.cnblogs.com/laohan110/p/4645024.html