Question

为什么这不起作用？

function VarsStorage(act,varname,val){
  if(act == 'get'){
    return sessionStorage.getItem(varname+'Cache');
  }else if(act == 'set'){
    sessionStorage.setItem(varname+'Cache', val);   
  }
}

VarsStorage('set','addStocksList',JSON.stringify(holder));

我尝试了这段代码的许多组合，但它仍然无效。

Answer 1

设置适合我：

$scope.example = function($event){
    var target = $($event.target);
    $(target).css("background-color", "white");
    $(target).css("border-color", "red");
};

但是如果从存储中获取序列化对象，则必须使用var holder = { ... }; VarsStorage('set','addStocksList',JSON.stringify(holder));将字符串解析为对象：

JSON.parse

Answer 2

这里工作正常，只需设置holder

即可

function VarsStorage(act,varname,val){
  if(act == 'get'){
    return sessionStorage.getItem(varname+'Cache');
  }else if(act == 'set'){
    sessionStorage.setItem(varname+'Cache', val);   
  }
}

var holder = { "name":"John", "age":30, "city":"New York"};
VarsStorage('set','addStocksList',JSON.stringify(holder));

VarsStorage('get','addStocksList');
//return
//"{"name":"John","age":30,"city":"New York"}"

sessionStorage不能使用JSON.stringify或？

2 个答案: