根据官网说明使用

源码

<template><div class="clw-input pt-3"><n-inputref="input":value="modelValue":type="type":title="title"clearable:disabled="disabled":size="size"placeholder=""@focus="$emit('focus')"@blur="blur"@input="input"@change="change"/><label class="z-1 text-warmgray" :style="style">{{ placeholder }}</label></div>
</template><script>
/*** @author        全易* @time          2022-10-11 13:08:46  星期二* @description   自定义输入框组件**/export default {name: 'ClwInput',props: {placeholder: {type: String,default: '',},// 父组件v-model绑定的值modelValue: {type: String, // 因为用于多选或单选的场景了default: '',},size: {type: String,default: 'medium',},disabled: {type: Boolean,},labelBG: {type: String,default: '#ffffff',},labelColor: {type: String,default: '#19aa8d',},type: {type: String,default: '',},},emits: ['focus', 'blur', 'change', 'update:modelValue'],data() {return {inputHeight: null,style: {},}},computed: {title() {return `${this.placeholder}：${this.modelValue}`},},watch: {modelValue: {deep: true,handler() {this.resetStyle()},},},mounted() {this.inputHeight = this.$refs.input.$el.offsetHeightthis.resetStyle()},methods: {blur() {this.resetStyle()this.$emit('blur')},input(val) {this.resetStyle()this.$emit('update:modelValue', val)},change(val) {this.$emit('change', val)},resetStyle() {if (this.modelValue) {this.style = {transform: `translateY(${-(this.inputHeight / 2)}px)`,color: `${this.labelColor} !important`,'background-color': this.labelBG,padding: '0 10px',}} else {this.style = {bottom: `${this.inputHeight * 0.18}px`,}}},},
}
</script><style lang="scss" scoped>
.clw-input {position: relative;label {position: absolute;left: 15px;pointer-events: none;transition: all 0.3s ease;}
}
</style>

使用

<clw-inputv-model="queryForm.propertyNo"placeholder="物业编号"@keydown.enter="getData"></clw-input>