vue操作v-html内元素的示例代码

vue操作v-html内元素的示例代码

<template>
  <div>
    <el-row :gutter="20">
      <el-col :span="24">
        <div class="title-content bg-choice">
          <span class="label-content"> 问题：</span>
          <span v-html="getQuestion"> </span>
        </div>
      </el-col>
    </el-row>
  </div>
</template>
<script lang="ts">
import { Component, Prop, Watch, Vue } from "vue-property-decorator";

@Component({
  name: "FillBlank"
})
export default class extends Vue {

  answerContent: string[] = [];

  mounted() {
    this.bindEvent();
  }

  // 给v-html内的元素绑定事件
  bindEvent() {
    const elements = document.getElementsByClassName("fill-blank");
    for (let i = 0; i < elements.length; i++) {
      const item = elements[i] as HTMLInputElement;
      //事件动态绑定
      item.onblur = this.fetchData;
    }
  }

  fetchData() {
    const elements = document.getElementsByClassName("fill-blank");
    // 先清空答案
    const answerContent = [];
    // 获取全部填空题答案
    for (let i = 0; i < elements.length; i++) {
      const element = elements[i] as HTMLInputElement;
      answerContent.push(element.value);
    }
    // 修改this.answerContent触发监听事件
    this.answerContent = answerContent;
  }

  beforeDestroy() {
    // 移除动态绑定事件
    const elements = document.getElementsByClassName("fill-blank");
    for (let i = 0; i < elements.length; i++) {
      const item = elements[i] as HTMLElement;
      // 移除动态绑定事件
      item.onblur = null;
    }
  }

  get getQuestion() {
    return `根据项目采购合同谈判的阶段划分，项目采购管理中的合同谈判一般分为、和签约阶段。`;
  }

  @Watch("answerContent")
  handleSave() {
    console.log("answerContent: ", this.answerContent);
  }
}
</script>

<style>
.label-content {
  font-weight: bold;
  margin-left: 20px;
}
.title-content {
  border-radius: 4px;
  min-height: 36px;
  line-height: 36px;
}
.answer-content {
  text-align: center;
  -webkit-appearance: none;
  background-color: #ffffff;
  background-image: none;
  border-radius: 4px;
  border: 1px solid #dcdfe6;
  box-sizing: border-box;
  color: #1f2d3d;
  display: inline-block;
  font-size: inherit;
  height: 40px;
  line-height: 40px;
  outline: none;
  padding: 0 15px;
  transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
  width: 30%;
  /* 去边框 */
  border-radius: 0;
  border-left: 0;
  border-right: 0;
  border-top: 0;
}
</style>