##install

yarn add --save free-validator

or

npm install --save free-validator

How to use

	<div className={styles.container}>
        <div className={styles["container-login-form"]}>
            <img src={avatarPic} className={styles["container-login-form-avatar"]}/>
            <form ref={this.refForm} className={styles['login-form']}>
                <div className={styles["container-login-form-item"]}>
                    <input type="text" autoComplete="off"  name="username" placeholder="用户名"/>
                </div>
                <div className={styles["container-login-form-item"]}>
                    <input type="password" autoComplete="off" name="password" placeholder="密码"/>
                </div>
                <button type="button"className={styles["container-login-form-login-btn"]} onClick={this.handleSubmit}>登录</button>                        
            </form>
        </div>
     </div>

	import { Validator } from 'free-validator';
	//填加规则
	validataFunc(registerForm){
        let validator = new Validator();
        validator.add(registerForm.elements[0],[{
            strategy:'isNonEmpty',
            errorMsg:'用户名不能为空'
        },{
            strategy:'minLength:11',
            errorMsg:'用户名不能小于11位'
        },{
            strategy:'isMobile',
            errorMsg:'用户名必须是手机号'
        }]);
        validator.add(registerForm.elements[1],[{
            strategy:'minLength:4',
            errorMsg:'密码不能小于4位'
        }]);
        let errorMsg = validator.start();
        return errorMsg;
    }
	//获取错误 formElement为form表单元素  
	const error = this.validataFunc(formElement);

->也可以对规则进行crud

	//默认的规则
	let validatorRules = {
	    isNonEmpty:function(value,errorMsg){
	        if(value ===''){
	            return errorMsg;
	        }
	    },
	    minLength:function(value,length,errorMsg){
	        if(value.length<length){
	            return errorMsg;
	        }
	    },
	    isMobile:function(value,errorMsg){
	        if(!/(^1[3|5|8][0-9]{9}$)/.test(value)){
	            return errorMsg
	        }
	    }
	}

	//添加 
	import { validatorRules } from "free-validator"

	validatorRules = {
		...validatorRules,
		...
	}
	//修改完规则再实例化validator对象
	let validator = new Validator();