<input id="sjh" type="text" name="" οncοpy="" required value="" class="ipt mui-input-clear" placeholder="请输入手机号" οnkeyup="Mobile2(this)" />
function Mobile2(obj1)
{
var value = obj1.value;
value = value.replace(/\s*/g, "");
var result = [];
for(var i = 0; i < value.length; i++)
{
if (i==3 || i==7)
{
result.push(" " + value.charAt(i));
}
else
{
result.push(value.charAt(i));
}
}
obj1.value = result.join("");
}