local storage
1. Add
localStorage.name = 'xiaoyi';//Save
sessionStorage.name ='lili'; // Existence
sessionStorage.setItem('name','lili');//存
The same will be overwritten
2. Get
sessionStorage.name;//Get
sessionStorage.getItem('name');//获取
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3. Delete
sessionStorage.name.removeItem();
delete all
sessionStorage.clear();
localStorage.clear();