在JavaScript中读取JSON编码的数组 [英] Reading a json encoded array in javascript

问题描述

此php函数通过ajax将json编码的对象返回给javascript.我使用带有stringify的json对象创建了一个变量.

This php function returns a json encoded object to a javascript through ajax. I create a variable with this json object with stringify.

var event_id = JSON.stringify(rdata.event_id);

当我打印该变量时，它看起来像这样.

When I print that variable it looks like this.

[{"0":"e20111129215359"},{"0":"e20120301133826"},{"0":"e20120301184354"},{"0":"e20120301193226"},{"0":"e20120301193505"},{"0":"e20120303182807"},{"0":"e20120303205512"},{"0":"e20120303211019"},{"0":"e20120306182514"},{"0":"e20120307122044"}]

如何访问event_id的每个元素?

How do I access each element of event_id?

推荐答案

不要stringify它.它已经是一个有效的JavaScript对象，因此只需使用以下命令即可直接访问它:

Don't stringify it. It's already a valid JavaScript object, so just access it directly with:

rdata.event_id[0]["0"];
// e20111129215359

// Or read them in a loop
for (var i=0; i<rdata.event_id.length; i++) {
   console.log(rdata.event_id[i]["0"];
}

值rdata.event_id是一个数组[]，其中包含一堆对象常量{}，每个对象常量仅具有一个属性"0".由于该属性是数字而不是字符串，因此您需要使用["0"]语法而不是普通的对象点运算符来访问它.

The value rdata.event_id is an array [] containing a bunch of object literals {} each having just one property "0". Since the property is a number instead of a string, you need to use the ["0"] syntax to access it, rather than the normal object dot operator.

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