Question

您好我的javascript for循环有问题，我在localStorage中有2个项目：

{"nazev":"1","sire":"2","mnozstvi":"3","barva":"4","typ":"5","slozeni":"6","strec":"7","poznamka":"8"}
{"nazev":"9","sire":"10","mnozstvi":"11","barva":"12","typ":"13","slozeni":"14","strec":"15","poznamka":"16"}

我的代码：

if(window.localStorage.length > 0) {
    for (var i = 0, len = localStorage.length; i < len; i++) {
        var foo = localStorage.getItem(localStorage.key(i));
    }
    //con
    $('#nv').html(foo);
}

和html输出（console.log输出两者;但这不是）：

{"nazev":"9","sire":"10","mnozstvi":"11","barva":"12","typ":"13","slozeni":"14","strec":"15","poznamka":"16"}

如果有人知道它为什么会发生以及如何解决它：/

Answer 1

<meta property="og:type" content="website" />

Answer 2

代码正在写你要求的最后一个，你可以累积然后打印; photo = models.ImageField(upload_to='images')

foo +=

Answer 3

在你的代码中，foo取最后一个值，你需要在for循环中连接它。我假设你早些时候已经初步化了。

if(window.localStorage.length > 0) {
for (var i = 0, len = localStorage.length; i < len; i++) {
    var foo+ = localStorage.getItem(localStorage.key(i)); //concate the string
}
    $('#nv').html(foo);
}

Javascript localStorage循环只输出最后一项

3 个答案: