小程序的开发：表单的验证(代码)

<form bindsubmit=&#39;formSubmit&#39;><view class="subInfo">
  <view class="subInfoItem clearfix">
    <text class="tag need">校区名称</text>
    <input name=&#39;name&#39; value=&#39;&#39; placeholder=&#39;请输入校区名称&#39; placeholder-class=&#39;placeholder&#39;></input>
  </view>
  <view class="subInfoItem clearfix">
    <text class="tag">联系电话</text>
    <input name=&#39;contactphone&#39; value=&#39;&#39; placeholder=&#39;请输入联系电话&#39; placeholder-class=&#39;placeholder&#39;></input>
  </view></view><view class=&#39;btnWrap&#39;>
  <button class=&#39;saveBtn&#39; form-type=&#39;submit&#39;>保存</button></view></form>

import WxValidate from '../utils/classes/WxValidate.js'var validate;

Page({    // 初始化表单校验
    initValidate(){        // 创建实例对象
        this.validate = new WxValidate({
            name: {
                required: true,
                maxlength: 20
            },
            contactphone: {
                tel: true
            }
        }, {
                name: {
                    required: '请输入校区名称!',
                    maxlength: '名称不得超过20字!'
                },
                contactphone: {
                    tel: '电话格式不正确!'
                }
            })
    },
    data: {

    },
    onLoad: function (options) {
        this.initValidate()
    },
    formSubmit(e){        // 校验表单
        if (!this.validate.checkForm(e.detail.value)){            
        const error = this.validate.errorList[0];
            wx.showToast({
                title: `${error.msg} `,
                icon: 'none'
            })            
            return false
        }        // 保存操作...
    }
})

// 验证字段的规则const rules = {
    email: {
        required: true,
        email: true,
    },
    tel: {
        required: true,
        tel: true,
    },
    idcard: {
        required: true,
        idcard: true,
    },
}// 验证字段的提示信息，若不传则调用默认的信息const messages = {
    email: {
        required: '请输入邮箱',
        email: '请输入正确的邮箱',
    },
    tel: {
        required: '请输入手机号',
        tel: '请输入正确的手机号',
    },
    idcard: {
        required: '请输入身份证号码',
        idcard: '请输入正确的身份证号码',
    },
}
// 创建实例对象
this.WxValidate = new WxValidate(rules, messages)
// 自定义验证规则
this.WxValidate.addMethod('assistance', (value, param) => {    
return this.WxValidate.optional(value) || (value.length >= 1 && value.length <= 2)
}, &#39;请勾选1-2个敲码助手&#39;)// 如果有个表单字段的 assistance，则在 rules 中写assistance: {
    required: true,
    assistance: true,
},// 调用验证方法，传入参数 e 是 form 表单组件中的数据submitForm(e) {    
const params = e.detail.value

    console.log(params)    // 传入表单数据，调用验证方法
    if (!this.WxValidate.checkForm(e)) {        
    const error = this.WxValidate.errorList[0]        
    return false
    }
},