【Vue -- 2/100】element-ui 表单校验规则的应用

element-ui 给el-form表单添加校验规则

<!-- 对话框组件  :visible.sync(设置是否显示对话框) width(设置对话框的宽度)
        :before-close(在对话框关闭前触发的事件) -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%">
            <!-- 对话框主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="电话" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 对话框底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addDialogVisible = false">确 定</el-button>
            </span>
        </el-dialog>

校验规则

data(){
        //验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            const regEmail = /^\[email protected]\w+(\.\w+)+$/
            if (regEmail.test(value)) {
            return cb()
            }
            //返回一个错误提示
            cb(new Error(‘请输入合法的邮箱‘))
        }
        //验证手机号码的规则
        var checkMobile = (rule, value, cb) => {
            const regMobile = /^1[34578]\d{9}$/
            if (regMobile.test(value)) {
            return cb()
            }
            //返回一个错误提示
            cb(new Error(‘请输入合法的手机号码‘))
        }
        return {
            ...
            addDialogVisible: false,    // 控制添加用户对话框的显示与隐藏
            // 添加用户的表单数据
            addForm: {
                username: ‘‘,
                password: ‘‘,
                email: ‘‘,
                mobile: ‘‘
            },
            // 添加表单的验证规则对象
            addFormRules: {
            username: [
                { required: true, message: ‘请输入用户名称‘, trigger: ‘blur‘ },
                {
                    min: 3,
                    max: 10,
                    message: ‘用户名在3~10个字符之间‘,
                    trigger: ‘blur‘
                }
            ],
            password: [
                { required: true, message: ‘请输入密码‘, trigger: ‘blur‘ },
                {
                    min: 6,
                    max: 15,
                    message: ‘用户名在6~15个字符之间‘,
                    trigger: ‘blur‘
                }
            ],
            email: [
                { required: true, message: ‘请输入邮箱‘, trigger: ‘blur‘ },
                { validator:checkEmail, message: ‘邮箱格式不正确，请重新输入‘, trigger: ‘blur‘}
            ],
            mobile: [
                { required: true, message: ‘请输入手机号码‘, trigger: ‘blur‘ },
                { validator:checkMobile, message: ‘手机号码不正确，请重新输入‘, trigger: ‘blur‘}
            ]
            }
        }

关闭对话框后将表单清空，否则下次打开表单会有数据在里面

addDialogClosed(){
      //对话框关闭之后，重置表达
      this.$refs.addFormRef.resetFields();
 }

原文地址：https://www.cnblogs.com/YangxCNWeb/p/12608878.html