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CookieCookie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


"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
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)
}


/**
* 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
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
status-icon
ref="ruleForm"
label-position="left"
label-width="0px"
class="demo-ruleForm login-page">

系统登录





v-model="ruleForm2.username"

auto-complete="off"

placeholder="用户名"

>




v-model="ruleForm2.password"

auto-complete="off"

placeholder="密码"

>

记住密码

登录




status-icon
ref="ruleForm"
label-position="left"
label-width="0px"
class="demo-ruleForm login-page">

系统登录





v-model="ruleForm2.username"

auto-complete="off"

placeholder="用户名"

>




v-model="ruleForm2.password"

auto-complete="off"

placeholder="密码"

>

记住密码

登录



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
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')

})

}

}

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
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 ^总结总结