1.在需要传值页面储存

//对象
let numberarr = { num1: 1, num2: 2, num3: 3 };
//字符串
let str = 'heoll';
localStorage.setItem('numberarr ', JSON.stringify(numberarr ));
localStorage.setItem('str', str);

2.在另一页面获取

let numb = JSON.parse(localStorage.getItem('number'));
 
let strarr = localStorage.getItem('str');

3.删除

//删除某个
 
localStorage.removeItem('nubmer');
 
//删除所有
 
localStorage.clear();