localStorage本地存储的用法

Posted 2020-06-17

localStorage用法
if(window.localStorage){
 alert(‘这个浏览器支持本地存储‘);
}else{
 alert(‘这个浏览器支持不本地存储‘);
}

localStorage.a=3;//设置a为"3"
localStorage["a"]="sfsf";//设置a为"sfsf"，覆盖上面的值

localStorage.setItem("b","isaac");//设置b为"isaac"

var a1 = localStorage["a"];//获取a的值

var a2 = localStorage.a;//获取a的值

var b=localStorage.getItem("b");//获取b的值

localStorage.removeItem("c");//清除c的值

localStorage.removeItem("a")

通过localStorage.key(i)---取出所有key   localStorage.getItem( localStorage.key(i))--通过key取出所有value
    var localStorage = window.localStorage;
   for(var i=0;i<localStorage.length;i++){
       alert(localStorage.key(i)+" "+localStorage.getItem( localStorage.key(i)))
   }