window.onload=function(){
    /**
     *其實也沒那麽難，
     *localStorage.setItem(json)  向本地儲存值
     *window.localStorage["鍵"]   得到本儲存的值
    */
    var setl = document.getElementById("setl");
    setl.onclick=function(){
        var name = document.getElementById(‘name‘).value;
        localStorage.setItem(
 
"name",name);
        var password = document.getElementById("password").value;
        localStorage.setItem("password",password);
    }
    var redl = document.getElementById("redl");
    redl.onclick=function(){
        var storage = window.localStorage;
        var name = storage["name"];
        
 
var password = storage["password"];
        if(storage["password"]== undefined && storage["name"]==undefined){
            console.log("沒有信息")
        } else{
            console.log(storage["password"],storage["name"])
        }
    }
}

localStorage 儲存與讀取