支付密码框

本文实现的是一个类似支付宝支付密码的界面，只可以输入数字，且只可以输入6位

1、样式表

 1  .wrap{
 2             margin: 10px auto;
 3              329px;
 4             height: 640px; 
 7             padding-top: 200px;
 8         }
 9         .inputBoxContainer{
10              240px;
11             height: 50px;
12             margin: 0 auto;
13             position: relative;
14         }
15         .inputBoxContainer .bogusInput{
16              100%;
17             height: 100%;
18             border: #c3c3c3 1px solid;
19             border-radius: 7px;
20             -moz-border-radius: 7px;
21             -webkit-border-radius: 7px;
22             overflow: hidden;
23             position: absolute;
24             z-index: 0;
25         }
26         .inputBoxContainer .realInput{
27              100%;
28             height: 100%;
29             position: absolute;
30             top:0;
31             left: 0;
32             z-index: 1;
33             filter:alpha(opacity=0);
34             -moz-opacity:0;
35             opacity:0;
36         }
37         .inputBoxContainer .bogusInput input{
38             padding: 0;
39              16.3%;
40             height: 100%;
41             float:left;
42             background: #ffffff;
43             text-align: center;
44             font-size: 20px;
45             border: none;
46             border-right: #C3C3C3 1px solid;
47         }
48         .inputBoxContainer .bogusInput input:last-child{
49             border: none;
50         }
51         .confirmButton{
52              240px;
53             height: 45px;
54             border-radius: 7px;
55             -moz-border-radius: 7px;
56             -webkit-border-radius: 7px;
57             background: #f4f4f4;
58             border: #d5d5d5 1px solid;
59             display: block;
60             font-size: 16px;
61             margin: 30px auto;
62             margin-bottom: 20px;
63         }
64         .showValue{
65              240px;
66             height: 22px;
67             line-height: 22px;
68             font-size: 16px;
69             text-align: center;
70             margin: 0 auto;
71         }

2、HTML代码

<div class="wrap">
    <div class="inputBoxContainer" id="inputBoxContainer">
        <input type="text" class="realInput"/>
        <div class="bogusInput">
            <input type="password" maxlength="6" disabled/>
            <input type="password" maxlength="6" disabled/>
            <input type="password" maxlength="6" disabled/>
            <input type="password" maxlength="6" disabled/>
            <input type="password" maxlength="6" disabled/>
            <input type="password" maxlength="6" disabled/>
        </div>
    </div>
    <button id="confirmButton" class="confirmButton">查看</button>
    <p class="showValue" id="showValue"></p>
</div>

3、js代码控制逻辑效果

   (function(){
        var container = document.getElementById("inputBoxContainer");
         boxInput = {
            maxLength:"",
            realInput:"",
            bogusInput:"",
            bogusInputArr:"",
            callback:"",
            init:function(fun){
                var that = this;
                this.callback = fun;
                that.realInput = container.children[0];
                that.bogusInput = container.children[1];
                that.bogusInputArr = that.bogusInput.children;
                that.maxLength = that.bogusInputArr[0].getAttribute("maxlength");
                that.realInput.oninput = function(){
                    that.setValue();
                }
                that.realInput.onpropertychange = function(){
                    that.setValue();
                }
            },
            setValue:function(){
                this.realInput.value = this.realInput.value.replace(/D/g,"");
                console.log(this.realInput.value.replace(/D/g,""))
                var real_str = this.realInput.value;
                for(var i = 0 ; i < this.maxLength ; i++){
                    this.bogusInputArr[i].value = real_str[i]?real_str[i]:"";
                }
                if(real_str.length >= this.maxLength){
                    this.realInput.value = real_str.substring(0,6);
                    this.callback();
                }
            },
            getBoxInputValue:function(){
                var realValue = "";
                for(var i in this.bogusInputArr){
                    if(!this.bogusInputArr[i].value){
                        break;
                    }
                    realValue += this.bogusInputArr[i].value;
                }
                return realValue;
            }
        }
    })()
    boxInput.init(function(){
        getValue();
    });
    document.getElementById("confirmButton").onclick = function(){
        getValue();
    }
    function getValue(){
        document.getElementById("showValue").innerText = boxInput.getBoxInputValue();
    }

4.实现的效果