el-select加上搜索查询时限制开头空格输入的解决方案

目录

• el-select加上搜索查询时，限制开头空格输入的解决方案
• el-select输入框禁止用户输入空格

<el-form-item label="商品类型：" prop="productType">
   <el-select
     ref="eleSelect" //这里很重要1
     v-model.trim="formData.productType"
     placeholder="请选择"
     filterable
     clearable
     @input.native="trimSelect"  //这里很重要2
   >
     <el-option
       v-for="item in dictList.SPLX"
       :key="item.dictId"
       :label="item.dictLabel"
       :value="item.dictValue"
     ></el-option>
 </el-select>
</el-form-item>

  // 开头为空格时重新赋值为空
  const eleSelect = ref()
  const trimSelect = ()=>{
    let regex = /^\s*$/;
    if(regex.test(eleSelect.value.selectedLabel)){
       eleSelect.value.selectedLabel = ''
    }
  }

<el-select
  v-model.trim="noUpdatedForm.terminalCode"
  v-my-directive
  placeholder="请选择"
  filterable
  clearable
>
  <el-option
    v-for="item in noUpdatedTerminalCode"
    :key="item.terminalCode"
    :value="item.terminalCode"
    :label="item.terminalCode"
  ></el-option>
</el-select>
directives: {
  'my-directive': {
    bind(el, binding) {
      el.addEventListener('keydown', function(e) {
        if (e.key === ' ') {
          e.preventDefault()
        }
      })
    }
  }
},