vue 支付密码组件
我们要做一个类似京东、支付宝支付时的6位密码组件，效果如下。
专门为PC端写的。移动端的很多框架基本都已经有了，而且实现逻辑会比pc简单，因为是移动端一般配单独键盘，甚至不需要input框，不用考虑鼠标，所以对焦点的处理会简单一些。而且移动端没有password autocomplete 的烦心事。
pc 端如果使用 input password 组件的话（参考文章：https://www.jianshu.com/p/03d2a4744258 ），chrome无论怎样都会弹出密码管理窗口。如使用autocomplete=new-password虽然不会自动填充，但还是会弹出密码管理窗口。所以我们使用input text/tel 组件，然后用•或*给盖住。
Vue 整体代码如下：
<template>
<div :id="`ids_${id}`" class="m-password-input">
<div v-for="(v, i) in 6" :key="i" class="box-input">
<div v-show="pwdList[i]" class="u-dot" @click="changePwd">•</div>
<input
:key="i"
v-model="pwdList[i]"
type="tel"
readonly
onfocus="this.removeAttribute('readonly');"
maxlength="1"
autocomplete="new-password"
class="u-input"
@input="changeInput"
@click="changePwd"
@keyup="keyUp($event)"
@keydown="oldPwdList = pwdList.length"
>
</div>
</div>
</template>
<script>
export default {
props: {
id: {
type: Number,
default: 1 // 当一个页面有多个密码输入框时，用id来区分
}
},
data() {
return {
pwdList: [],
pwdListReal: [],
oldPwdList: [],
isDelete: false,
ipt: ''
}
},
mounted() {
this.ipt = document.querySelectorAll(`#ids_${this.id} .u-input`)
},
methods: {
keyUp(ev) {
let index = this.pwdList.length
if (!index) return
if (ev.keyCode === 8) {
this.isDelete = true
if (this.oldPwdList === this.pwdList.length) {
if (index === this.pwdList.length) {
this.pwdList.pop()
}
index--
} else {
index > 0 && index--
}
this.ipt[index].focus()
} else if (this.isDelete && index === this.pwdList.length && /^\d$/.test(ev.key)) {
this.isDelete = false
this.pwdList.pop()
this.pwdList.push(ev.key)
this.ipt[this.pwdList.length] && this.ipt[this.pwdList.length].focus()
}
this.$emit('get-pwd', this.pwdList.join(''))
},
changePwd() {
let index = this.pwdList.length
index === 6 && index--
this.ipt[index].focus()
},
changeInput() {
let index = this.pwdList.length
const val = this.pwdList[index - 1]
if (!/[0-9]/.test(val)) {
this.pwdList.pop()
return
}
if (!val) {
this.pwdList.pop()
index--
if (index > 0) this.ipt[index - 1].focus()
} else {
if (index < 6) this.ipt[index].focus()
}
}
}
}
</script>
<style lang="scss" scoped>
.m-password-input {
display: flex;
border-radius: 5px;
padding: 10px 0;
border: 1px solid #cccccc;
position: relative;
margin-left: 1px;
.box-input {
display: inline-block;
position: relative;
border-right: 1px solid #cccccc;
&:last-child{
border-right:0;
}
.u-dot {
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
display: flex;
align-items: center;
justify-content: center;
font-size: 40px;
}
.u-input {
text-align: center;
font-size: 30px;
float: left;
width: 40px;
height: 20px !important;
color: transparent;
caret-color: #333333;
outline: unset;
border: none;
border-right: 1px solid #cccccc;
&:last-child{
border-right:0;
}
}
}
}
</style>
使用：
<password-input @get-pwd="getPwd" />
import PasswordInput from '@/components/PasswordInput'
methods: {
getPwd(password) {
console.log(password)
}
}
参考文章：
