vue表单效验实现

<el-dialog v-model="dialogFormVisible" @close="clos" >
  <el-form ref="ruleFormRef" :model="form" :rules="rules" label-width="120px" class="demo-ruleForm" :size="formSize"
          status-icon>  
  <el-form-item label="名称" :label-width="formLabelWidth" prop="name">//prop字段名称
            <el-input v-model="form.name" autocomplete="off" placeholder="请输入名称" />
          </el-form-item>
    <el-form-item label="名称" :label-width="formLabelWidth" prop="title">
            <el-input v-model="form.title" autocomplete="off" placeholder="请输入名称" />
          </el-form-item>
            </el-form>
  </el-dialog>

const form = reactive({
  name: '',
  title:'',
});

const rules = reactive({
  name: [{ required: true, message: '请输入完整内容', trigger: 'blur' }],
  title: [{ required: true, message: '请输入完整内容', trigger: 'blur' }]
});

const imgA = (rule, value, callback) => {
  if (!value) {
    return callback(new Error('请上传图片'));
  }
  callback();
};
const rules = reactive({
  img: [{ required: true,validator: imgA , trigger: 'change' }],
});

const dialogFormVisibles = () => {
  //获取所有需要校验的值
  if (!ruleFormRef.value) return;
  ruleFormRef.value.validate((valid, fields) => {
   //判断是否有值
    if (valid) {
      console.log('submit!');
      dialogFormVisible.value = false;
      ElMessage({
        message: '提交成功',
        type: 'success',
      });
    } else {
      console.log('error submit!', fields);
      ElMessage({
        message: '请将内容输入完整',
        type: 'warning',
      });
      console.log(ruleFormRef.value);
    }
  });
};

const ruleFormRef = ref();
const clos = () => {
  ruleFormRef.value.resetFields();
};