JS实现把一个页面层数据传递到另一个页面的两种方式

<input id="userName" type="text" /><input id="passwords" type="password" /><button id="btn">设置</button><button onclick="login()">传递cookie</button><button onclick="deletecookie()">删除</button>

//设置cookievar setCookie = function (name, value, day) {  //当设置的时间等于0时，不设置expires属性，cookie在浏览器关闭后删除  var expires = day * 24 * 60 * 60 * 1000;  var exp = new Date();  exp.setTime(exp.getTime() + expires);  document.cookie = name + "=" + value + ";expires=" + exp.toUTCString();};//删除cookievar delCookie = function (name) {  setCookie(name, ' ', -1);};//传递cookiefunction login() {  var name = document.getElementById("userName");  var pass = document.getElementById("passwords");  setCookie('userName',name.value,7)  setCookie('password',pass.value,7);  location.href = 'b.html'}function deletecookie() {  delCookie('userName',' ',-1)}

<button onclick="getcookie()">获取</button>

//获取cookie代码var getCookie = function (name) {  var arr;  var reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");  if (arr = document.cookie.match(reg)){    return arr[2];  }  else    return null;};//点击获取按钮之后调用的函数function getcookie() {  console.log(getCookie("userName"));  console.log(getCookie("password"))}

<input type="text" value="猜猜我是谁"><button onclick="jump()">跳转</button>

function jump() {  var s = document.getElementsByTagName('input')[0];  location.href='7.获取参数.html?'+'txt=' + encodeURI(s.value);}

<div id="box"></div>var loc = location.href;var n1 = loc.length;var n2 = loc.indexOf('=');var txt = decodeURI(loc.substr(n2+1,n1-n2));var box = document.getElementById('box');box.innerHTML = txt;

//将localStorage传递到哪个页面location.href = 'b.html'//设置localStoragewindow.localStorage.setItem('user','haha');

<button onclick="getcookie()">获取</button>function getcookie() {  //获取传递过来的localStorage  console.log(window.localStorage.getItem('user'))}