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| <template>
<div>
<h1>v-model</h1>
<div class="row">
<div> input(默认)<input v-model="x1"> {{ x1 }}</div>
<div>Input2(官方文档)<Input2 v-model="x2" /> {{ x2 }}</div>
<div>Input3(我)<Input3 v-model="x3" /> {{ x3 }}</div>
<div>Input4(历史遗留代码)<Input4 v-model="x4" /> {{ x4 }}</div>
</div>
<h1>@input only</h1>
<div class="row">
<div>input(默认)<input @input="(e)=>{input1 = e.target.value;}"> {{ input1 }}</div>
<div>Input2(官方)<Input2 @input="(v)=>{input2=v;}" /> {{ input2 }}</div>
<div>Input3(我)<Input3 @input="(v)=>{input3=v;}" /> {{ input3 }}</div>
<div>Input4(历史遗留代码)<Input4 @input="(v)=>{input4=v;}" /> {{ input4 }}</div>
</div>
</div>
</template>
<script>
export default {
components: {
Input3: {
name: 'FormInputJsx',
// inheritAttrs: false,
props: {
inputFilter: {
type: Function,
default: null
},
// 传入类型
value: String
},
data() {
return {
valueIn: this.value
}
},
methods: {
updateValue(value) {
let newVal = value
if (this.inputFilter) {
newVal = this.inputFilter(newVal)
}
// this.valueIn = newVal
// if (this.$refs.input.value !== this.valueIn) {
// this.$refs.input.value = this.valueIn
// }
this.$emit('input', newVal)
}
},
render(h) {
const inputConfig = {
ref: 'input',
// input 原始属性不改动 自动下发-
// attrs: Object.assign({ ...this.$attrs }),
on: Object.assign({ ...this.$listeners }, {
input: event => this.updateValue(event.target.value) // 输入框改变
})
}
if (typeof this.value !== 'undefined') {
inputConfig.domProps = {
value: this.value
}
}
return h('input', inputConfig)
}
},
Input4: {
render(h) {
const self = this
return h('input', {
domProps: {
value: self.value
},
on: {
input (event) {
self.Amount = event.target.value
}
}
})
},
props: {
value: {
type: String,
default: ''
}
},
data() {
return {
Amount: ''
}
},
watch: {
value(newVal) {
this.Amount = newVal
},
Amount(newVal) {
// 从前截取 不带$
this.Amount = newVal.match(/^\d*(\.?\d{0,2})/g)[0] || ''
if (isNaN(this.Amount)) {
this.Amount = ''
}
this.$emit('input', this.Amount)
}
}
},
Input2: {
props: ['value'],
render (createElement) {
const self = this
return createElement('input', {
domProps: {
value: self.value
},
on: {
input (event) {
self.$emit('input', event.target.value)
}
}
})
}
}
},
data() {
return {
x1: '',
x2: '',
x3: '',
x4: '',
input1: '',
input2: '',
input3: '',
input4: ''
}
},
watch: {
x1(nv) {
this.x1 = nv.substr(0, 3)
},
x2(nv) {
this.x2 = nv.substr(0, 3)
},
x3(nv) {
this.x3 = nv.substr(0, 3)
},
x4(nv) {
this.x4 = nv.substr(0, 3)
},
input1(nv) {
this.input1 = nv.substr(0, 3)
},
input2(nv) {
this.input2 = nv.substr(0, 3)
},
input3(nv) {
this.input3 = nv.substr(0, 3)
},
input4(nv) {
this.input4 = nv.substr(0, 3)
}
}
}
</script>
<style>
.row{
display:flex;
flex-direction:column;
}
</style>
|