实现简单输入支付密码的输入

    <div class="gswithdrawaltck">

    <h1><font></font><em>58.00元</em></h1>

    <h2>提现银行卡:邮政银行</h2>

<div class="gswithdrawaltckinput"><input  id="aa" type="password"  name="mima" oninput="shuru(this.value);" onpropertychange="shuru(this.value)"/> <input type="password" name="mima"  /> <input type="password" name="mima"  /> <input type="password" name="mima"
/> <input type="password" name="mima" /> <input type="password" name="mima" /> </div>
    </div>

    <script>

        function shuru(el) {

            var num = ch();

            var tag = document.getElementsByName("mima");

            tag[0].value = el.substr(el.length - 1, 1);

            tag[num].value = el.substr(el.length - 1, 1);

     

        }

        var i = 0;

        function ch() {

            return i++;

        }

    </script>