循环我有3个文件阅读JSON数据,并通过它
- 的index.html
- data.json
- 我WAMP的服务器上app.js
。我希望遍历JSON数据并更新HTML文件的内容。
这些都是我的文件的内容:
data.json
{
"user": [{
"goal": "HTML essential training",
"type": "Beginner",
"date": "20/07/2016"
}, {
"goal": "CSS essential training",
"type": "Beginner",
"date": "30/07/2016"
}, {
"goal": "CSS core concepts",
"type": "Intermediate",
"date": "10/08/2016"
}, {
"goal": "Javascript essential training",
"type": "Beginner",
"date": "20/08/2016"
}, {
"goal": "Object Oriented JS",
"type": "Advanced",
"date": "30/08/2016"
}]
}
app.js
var request = new XMLHttpRequest();
request.open('GET', 'data.json');
request.onreadystatechange = function() {
if ((request.readyState === 4) && (request.status === 200)) {
var items = JSON.parse(request.responseText);
console.log(items);
for (var key in items) {
console.log(key);
var output = "<tr><td><input type='checkbox' name='record'></td><td>" + items[key].goal + "</td><td>" + items[key].type + "</td><td>" + items[key].date + "</td></tr>";
console.log(output);
$("table tbody").append(output);
output = '';
}
}
}
request.send();
当我运行这段代码,一行的所有值创建设置为undefined。我认为我的循环逻辑存在问题,请帮助我。
谢谢你帮助我! –
@RakeshVenki欢迎您:) –
“你一直用这个词,我不认为这意味着你的想法。” [没有像“JSON对象”](http://benalman.com/news/2010/03/theres-no-such-thing-as-a-json/)。 –