我们这回使用纯前端保存密码

既然是记住密码，前端也就是使用cookie保存，访问时用cookie读取

先来了解下cookie的基本使用吧

Cookie

所有的cookie信息都在document.cookie中存放着，是一个字符串，里面的cookie以分号和空格分隔。就像这样：

"key1=value1; key2=value2; key3=value3" // 使用document.cookie 来获取所有cookie docuemnt.cookie = "id="+value

操作cookie

/** * 设置cookie值 * * @param {String} name cookie名称 * @param {String} value cookie值 * @param {Number} expiredays 过期时间，天数 */ function setCookie (name, value, expiredays) { let exdate = new Date() //setDate获取N天后的日期 exdate.setDate(exdate.getDate() + expiredays) //getDate() 获取当前月份的日 + 过期天数 document.cookie =name+"="+encodeURI(value)+";path=/;expires="+exdate.toLocaleString() } /** * 获取cookie值 * @param {String} name cookie名称 */ function getCookie (name) { var arr = document.cookie.split(";") //转换数组 //["_ga=GA1.1.1756734561.1561034020", " mobile=123" password=456"] for(var i=0;i<arr.length;i++){ var arr2 = arr[i].split('='); // ["_ga", "GA1.1.1756734561.1561034020"] if(arr2[0].trim() == name){ return arr2[1] } } } /** * 删除指定cookie值 * @param {String} name cookie名称 */ function clearCookie (name) { setCookie(name, '', -1) } /** * 浏览器是否支持本地cookie */ function isSupportLocalCookie () { let {name, value} = {name: 'name', value: 'mingze'} setCookie(name, value, 1) //设置cookie return getCookie(name).includes(value) //includes 判断数组name中是否含有当前value(返回true or false) }

好了了解了cookie我们开始如何实现一个简单的记住密码功能

HTML代码

<el-form :model="ruleForm" :rules="rules" status-icon ref="ruleForm" label-position="left" label-width="0px" class="demo-ruleForm login-page"> <h3 class="title">系统登录</h3><el-form-item prop="username"> <el-input type="text" v-model="ruleForm2.username" auto-complete="off" placeholder="用户名" ></el-input> </el-form-item><el-form-item prop="password"> <el-input type="password" v-model="ruleForm2.password" auto-complete="off" placeholder="密码" ></el-input> </el-form-item><el-checkbox v-model="checked" style="color:#a0a0a0;margin:0 0 20px 0">记住密码</el-checkbox><el-form-item style="width:100%;"> <el-button type="primary" style="width:100%;" @click="handleSubmit" :loading="logining">登录 </el-button></el-form-item></el-form>

vue代码

data(){ return { logining: false, checked: true ruleForm: { username: '', password: '', }, rules: { username: [{required: true, message: '请输入您的帐户', trigger: 'blur'}], password: [{required: true, message: '请输入您的密码', trigger: 'blur'}] }, } }, mounted() { this.account() //获取cookie的方法 }, account(){ if(document.cookie.length <= 0){ console.log(this.getCookie('mobile')) this.ruleForm.username = this.getCookie('mobile') this.ruleForm.password = this.getCookie('password') } }, setCookie(c_name,c_pwd,exdate){ //账号，密码 ，过期的天数 var exdate = new Date() console.log(c_name,c_pwd) exdate.setTime(exdate.getTime() + 24 * 60 * 60 * 1000 * exdate) //保存的天数 document.cookie ="mobile="+c_name+";path=/;expires="+exdate.toLocaleString() document.cookie ="password="+c_pwd+";path=/;expires="+exdate.toLocaleString() }, getCookie(name){ var arr = document.cookie.split(";") //["_ga=GA1.1.1756734561.1561034020", " mobile=123" password=456"] for(var i=0;i<arr.length;i++){ var arr2 = arr[i].split('='); // ["_ga", "GA1.1.1756734561.1561034020"] if(arr2[0].trim() == name){ return arr2[1] } } }, clearCookie(){ this.setCookie("","",-1) //清除cookie }, handleSubmit(){ //提交登录 this.$refs.ruleForm.validate((valid) => { if(valid){ this.logining = true; var _this = this; if(_this.checked == true){ //存入cookie _this.setCookie(_this.ruleForm.username,_this.ruleForm.password,7) //保存7天 }else{ _this.clearCookie(); } Login({ mobile:_this.ruleForm.username, password:_this.ruleForm.password }).then((result) => { console.log(result) _this.$alert('登陆成功') }) } }

好了，这回的记住密码就到这里，小伙伴们一起努力吧 ^ 0 ^

总结

到此这篇关于前端vue+elementUI如何实现记住密码功能的文章就介绍到这了,更多相关vue+elementUI记住密码内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！