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element-ui之el-dialog鼠标在遮罩层松开后导致弹窗关闭问题

解决Element UI Dialog弹窗鼠标在遮罩层松开后导致弹窗关闭问题 – LB

解决方法一 ​

最简单有效的方法加个:close-on-click-modal="false"来阻止点击遮罩层关闭弹窗

解决方法二 ​

关键字：event.target.classList

既能点击遮罩层关闭弹窗，又可以解决该弹窗的问题，可以利用 Dialog 的before-close和鼠标的mousedown和mouseup来解决，代码大致如下：
利用mousedown和mouseup获取到的 class 列表在before-close的时候做判断。

html
 <template>
  <div>
    <el-button type="text" @click="dialogVisible = true">
      点击打开 Dialog
    </el-button>
    <el-dialog
      title="提示"
      :visible.sync="dialogVisible"
      :before-close="beforeDialogClose"
      @mousedown.native="dialogMousedown"
      @mouseup.native="dialogMouseup"
    >
      <span>这是一段信息</span>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="dialogVisible = false">
          确 定
        </el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
  export default {
    data () {
      return {
        dialogVisible: false,
        mousedownCls: [],
        mouseupCls: []
      }
    },
    methods: {
      dialogMousedown (e) {
        this.mousedownCls = [...e.target.classList]
      },
      dialogMouseup (e) {
        this.mouseupCls = [...e.target.classList]
      },
      beforeDialogClose (done) {
        const isWrapper =
          this.mousedownCls.includes('el-dialog__wrapper') &&
          this.mouseupCls.includes('el-dialog__wrapper')
        const isClose =
          this.mousedownCls.includes('el-dialog__close') &&
          this.mouseupCls.includes('el-dialog__close')
        if (isWrapper || isClose) {
          done()
        }
      }
    }
  }
</script>
 <template>
  <div>
    <el-button type="text" @click="dialogVisible = true">
      点击打开 Dialog
    </el-button>
    <el-dialog
      title="提示"
      :visible.sync="dialogVisible"
      :before-close="beforeDialogClose"
      @mousedown.native="dialogMousedown"
      @mouseup.native="dialogMouseup"
    >
      <span>这是一段信息</span>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="dialogVisible = false">
          确 定
        </el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
  export default {
    data () {
      return {
        dialogVisible: false,
        mousedownCls: [],
        mouseupCls: []
      }
    },
    methods: {
      dialogMousedown (e) {
        this.mousedownCls = [...e.target.classList]
      },
      dialogMouseup (e) {
        this.mouseupCls = [...e.target.classList]
      },
      beforeDialogClose (done) {
        const isWrapper =
          this.mousedownCls.includes('el-dialog__wrapper') &&
          this.mouseupCls.includes('el-dialog__wrapper')
        const isClose =
          this.mousedownCls.includes('el-dialog__close') &&
          this.mouseupCls.includes('el-dialog__close')
        if (isWrapper || isClose) {
          done()
        }
      }
    }
  }
</script>

结语 ​

可以将上述部分代码写成 mixin，进行全局注册，这样其他页面的弹窗也可以直接使用，或者对弹窗进行二次封装也可。