遇到一个需求，需要实现和移动端短信输入一样，输入内容后，光标会进入下一个输入框
需要用到2个事件
keydown事件发生在键盘的键被按下的时候
keyup 事件在按键被释放的时候触发
<template>
<div class="box">
<el-form :model="ruleForm" :rules="rules" ref="ruleForm" class="demo-ruleForm">
<el-form-item label="名称" prop="name">
<span v-for="(item,index) in namelist" :key="index">
<input v-model="item.val" class="border-input" @keyup="nextFocus($event,index)" @keydown="changeValue(index)" />
</span>
</el-form-item>
</el-form>
</div>
</template>
<script>
export default {
data () {
return {
ruleForm: {
name: ''
},
namelist: [
{ val: '' },
{ val: '' },
{ val: '' }
],
rules: {
name: [
{ required: true, message: '请输入活动名称', trigger: 'blur' }
],
}
}
},
methods: {
/*对焦到下一个input框去*/
nextFocus (el, index) {
var dom = document.getElementsByClassName("border-input"),
currInput = dom[index],
nextInput = dom[index + 1],
lastInput = dom[index - 1];
// 删除键
if (el.keyCode != 8) {
if (index < (this.namelist.length - 1)) {
nextInput.focus();
} else {
currInput.blur();
}
} else {
if (index != 0) {
lastInput.focus();
}
}
// 进行赋值
this.ruleForm.name = this.namelist.map(item => item.val).join('')
},
/*当键盘按下的时候清空原有的数*/
changeValue (index) {
this.namelist[index].val = "";
}
}
}
</script>
<style lang="less" scoped>
.border-input {
background: #ffffff;
width: 24px;
font-size: 24px;
height: 24px;
margin-left: 8px;
text-align: center;
border: 1px solid #ccc;
border-radius: 4px;
}
.box {
width: 400px;
margin: 0 auto;
border: 1px solid #ccc;
}
/deep/.el-form-item__content {
text-align: right;
}
</style>
