pc端自定义密码支付框组件（仿支付宝）

最近在写几个基于Vue的后台管理系统，期间碰到支付的问题，找了好久都没找着，索性就自己写一个，欢迎指教；

废话不多说，直接上代码：

1、主要用到js的一些基础知识（很底层）；

2、全局注册支付框组件（必须的嘛）；

import payBox from './components/payBox';

Vue.component('payBox',payBox)

3、组件代码（重点，行不行全靠它了）

<template>
    <div class="pay_box">
        <div class="modelBox" v-if="dialogShow">
            <div class="payDialog">
                <div class="head">请输入支付密码</div>
                <div class="password">
                    <input v-model='inputPass' id='input' ref='myInput' type='text' autofocus="autofocus" maxlength='6' class='inputPass' />
                    <form>
                        <input v-model='myPassword.myPassword1' type='password' maxlength='1' readonly="readonly" />
                        <input v-model='myPassword.myPassword2' type='password' maxlength='1' readonly="readonly" />
                        <input v-model='myPassword.myPassword3' type='password' maxlength='1' readonly="readonly" />
                        <input v-model='myPassword.myPassword4' type='password' maxlength='1' readonly="readonly" />
                        <input v-model='myPassword.myPassword5' type='password' maxlength='1' readonly="readonly" />
                        <input v-model='myPassword.myPassword6' type='password' maxlength='1' readonly="readonly" />
                    </form>
                    <div class="tip" v-if="psdWrong">
                        支付密码错误，请输入6位数字支付密码
                    </div>
                </div>
                <div class="footer">
                    <el-button type="primary" @click='cancel'>取 消</el-button>
                    <el-button type="primary" @click='confirm'>确 定</el-button>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
    export default {
        props:{
            dialogShow:{
                type: Boolean
            }
        },
        data() {
            return {
                inputPass: '',
                unbindForm: {
                    pay_pass: ''
                },
                myPassword: {
                    myPassword1: '',
                    myPassword2: '',
                    myPassword3: '',
                    myPassword4: '',
                    myPassword5: '',
                    myPassword6: ''
                },
                psdWrong: false,

                unbind_rules: {
                    pay_pass: [{
                        required: true,
                        message: '请输入密码',
                        trigger: 'blur'
                    }]
                },
                options: [],
                pass: ''
            }
        },
        created() {
            // this.showUp();
        },
        watch: {
            inputPass() {
                this.show();
                var patt = /^[0-9]*$/g;
                this.psdWrong = !patt.test(this.inputPass);//表单校验，输入错误时给出提示
            },
            dialogShow(){//确保每次打开窗口聚焦到输入框
                this.showUp();
            }
        },
        methods: {
            show() {//用户输入显示
                var myInputPass = this.inputPass;
                var arr = myInputPass.split('');
                var obj = this.myPassword;
                var index = 0;
                for (var i in obj) {
                    obj[i] = arr[index];
                    index++
                }
            },
            cancel() {
                this.inputPass = '';
                this.$emit('closeDialog',false)
            },
            confirm() {
                alert('输入的密码是：'+this.inputPass);
                this.inputPass = '';
                this.$emit('closeDialog',false);
            },
            showUp() {
                //保证焦点始终在表单上
                this.$nextTick(() => {
                    this.$refs.myInput.focus();
                })
                document.addEventListener("mousedown", (e) => {
                    if (e.target.id !== "input") {
                        e.preventDefault()
                    }
                }, false);
            }
        }
    }
</script>

<style>
    .pay_box {
        position: relative;
    }
    /* 支付对话框 */
    .pay_box .modelBox {
         100%;
        height: 100%;
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        overflow: auto;
        margin: 0;
        background-color: rgba(0, 0, 0, .3);
    }

    .pay_box .payDialog {
        background-color: #fff;
        border: 1px solid #ccc;
        position: absolute;
         480px;
        height: auto;
        top: 30%;
        left: 37.5%;
        z-index: 999;
    }

    .pay_box .payDialog .inputPass {
        position: absolute;
        z-index: -999;
        right: 25%;
        top: 40%;
        border: transparent;
    }
    .pay_box .payDialog .inputPass:focus{
        outline:none;
    }

    .pay_box .payDialog form {
        margin-left: 10%;
         76%;
        display: flex;
        height: 48px;
        justify-content: space-between;
    }

    .pay_box .payDialog form>input {
         48px;
        height: 48px;
        text-align: center;
        
    }

    .pay_box .head,
    .pay_box .password,
    .pay_box .footer {
        padding: 20px 40px;
        text-align: center;
    }


    .pay_box .password>form>input {
        font-size: 30px;
    }

    .pay_box .tip {
        color: darkorange;
        font-size: smaller;
    }
</style>

4、使用（激动人心的时刻到了）

<template>
    <div>
        <el-button type="primary" @click='showUp'>去支付</el-button>
        <pay-box :dialogShow='flag' @closeDialog='close'></pay-box>
    </div>
</template>

<script>
    export default{
        data(){
            return{
                flag: false
            }
        },
        methods:{
            showUp(){
                this.flag = true;
            },
            close(val){
                this.flag = false;
            }
        }
    }
</script>

<style>
</style>

5、差点忘了，效果图如下（有图有真相）

6、好了，打完收工。

7、源码下载地址