vue.js封装switch开关组件的操作

Z时代
2024-01-10
分类：IT

我的项目本来用的element，但是switch开关不符合设计要求，于是自己封装了一个switch组件，并且实现了switch开关的双向数据绑定


<template>
<label role="checkbox" :class="['switch', { toggled }]">
<input type="checkbox" class="switch-input" @change="toggle" />
<div
class="switch-core"
:style="{ backgroundColor: toggled ? colorChecked : colorUnchecked }"
>
<div
class="switch-button"
:style="{
transition: `transform ${speed}ms`,
transform: toggled ? null : `translate3d(32px, 0px, 0px)`
}"
></div>
</div>
<span class="switch-label label-right" v-if="toggled" v-html="labelChecked">
</span>
<span class="switch-label label-left" v-html="labelUnchecked" v-else>
</span>
</label>
</template>


<script>
export default {
 name: "ToggleSwitch",
 data() {
  return {
   toggled: this.value
  };
 },
 props: {
  value: {
   type: Boolean,
   default: true
  },
  speed: {
   type: Number,
   default: 100
  },
  labelChecked: {
   type: String,
   default: "启用"
  },
  labelUnchecked: {
   type: String,
   default: "停用"
  },
  colorChecked: {
   type: String,
   default: "#11CED2"
  },
  colorUnchecked: {
   type: String,
   default: "#E6EAF1"
  }
 },
 watch: {
  value: function(val) {
   this.value = val;
  }
 },
 methods: {
  toggle(event) {
   this.toggled = !this.toggled;
   this.$emit("update:value", this.toggled);
   this.$emit("change", event);
  }
 }
};
</script>


<style lang="scss" scoped>
.switch {
 display: inline-block;
 position: relative;
 overflow: hidden;
 vertical-align: middle;
 user-select: none;
 font-size: 10px;
 cursor: pointer;
 .switch-input {
  display: none;
 }
 .switch-label {
  position: absolute;
  top: 0;
  font-weight: 600;
  color: white;
  z-index: 2;
  &.label-left {
   left: 10px;
   line-height: 20px;
   border-top-left-radius: 2px;
   border-bottom-left-radius: 2px;
   color: #b5bdc8;
  }
  &.label-right {
   right: 10px;
   line-height: 20px;
   border-top-right-radius: 2px;
   border-bottom-right-radius: 2px;
  }
 }
 .switch-core {
  display: block;
  position: relative;
  box-sizing: border-box;
  outline: 0;
  margin: 0;
  transition: border-color 0.3s, background-color 0.3s;
  user-select: none;
  width: 46px;
  height: 20px;
  border-radius: 4px;
  line-height: 20px;
  .switch-button {
   width: 8px;
   height: 16px;
   display: block;
   position: absolute;
   overflow: hidden;
   top: 2;
   left: 2;
   z-index: 3;
   transform: translate3d(0, 0, 0);
   background-color: rgba(255, 255, 255, 1);
   border-radius: 4px;
   margin-top: 2px;
   margin-left: 2px;
  }
 }
}
</style>

调用开关组件


<toggle-switch
       v-model="value"
       :value.sync="value"
       @change="switchChange"
      >
      </toggle-switch>

组件实现了switch开关的双向数据绑定，在父组件的methods中写一个@change事件


switchChange() {
   console.log("switch值改变");
  },

补充知识：vue 监控el-switch控件值的变化

我要的效果是根据系统消息的推送范围决定推送人标签的显示，如下图两种情况：

——选择全站推送

——选择个人推送

——页面定义的data对象

el-switch标签控件的代码， v-model="entity.pushRange"绑定的是推送范围字段


 <el-form-item label="推送范围：" :label-width="formLabelWidth" prop="pushRange">
    <el-switch
     v-model="entity.pushRange"
     active-color="#13ce66"
     inactive-color="#ff4949"
     active-text="全站"
     inactive-text="个人"
     @change="parens2($event)">
    </el-switch>
 </el-form-item>

下面的推送人id文本框，v-if=“FalgpushId”用来控制该文本框的显示，等于false时隐藏，true时显示（默认值为初始化时定义的FalgpushId = false，所以隐藏掉了）


 <!-- 推送人id -->
 <el-form-item label="推送人ID：" :label-width="formLabelWidth" prop="pushId" v-if="FalgpushId">
   <el-input v-model="entity.pushId" :disabled="disabled" clearable></el-input>
 </el-form-item>

methods中的方法，通过$event写法来监控该控件值的变化


 methods:{
  //该方法传入推送范围值，根据判断，决定是否展示其下面的推送人ID文本框
     parens2(value){
      let self = this ;
      if(value == false){
       //el-switch控件为 个人推送时，value为false
       self.FalgpushId = true;   //推送人id文本框显示  
       self.entity.pushRange = false; 
      }else if(value == true){
       //el-switch控件为 true 全站推送，value为true
       self.FalgpushId = false;   //推送人id文本框隐藏
       self.entity.pushRange = true;
      }
     },
 }