textfield - 设置文本字段限制

Question

我有一个文本字段。我想让这个字段只接受 10 位数字，如果输入的数字大于 10 或小于 10，则抛出错误

<td><input name="Number" type="text" id="Number" value="" required/></td>

    document.getElementById('Number').onchange = function()
    {
          if(this.value > 11){
               this.value = "Please Check the Ticket Number Again";
          }
          if(this.value < 10){
               this.value = "Please Check the Ticket Number Again";
          }
    }

Answer 1

试试这个代码：

<td><input name="Number" type="text" id="Number" value="" required/></td>

    document.getElementById('Number').onchange = function()
    {
          if(this.value.length != 10){
               this.value = "Please Check the Ticket Number Again";
          }

    }