vue获取下拉选的文字

<el-select placeholder="请选择" v-model="durationUnit" @change="textMethod">
  <el-option v-for="item in list" :key="item.dictValue" :label="item.dictName" :value="item.dictValue" />
</el-select>

data() {
    return {
    	list : null,
    	durationUnit : '',
    }
}
	
textMethod(id) {
      let obj = {};
      obj = this.list.find((item)=>{
        return item.dictValue === id;
      });
      console.log("name->" + obj.dictName);
    },