我在使用JSON和Ajax获取输出来填充页面时遇到了麻烦。我有一个网页,其中看起来像这样:使用AJAX和JSON填充媒体正文
<!DOCTYPE html>
<html>
<title>Some Title</title>
<body onload="loadData();">
<div id="body-wrapper">
<div class="preview-common">
<div class="view-pane-common">
<p class="save-hover">SAVE</p>
<img src="dummy-data/new-preview.png" alt="Some Image" class="view-image-common">
</div>
<div class="info-pane-common">
<a><span> Some Title </span></a>
<p><span> By Some user </span></p>
</div>
</div>
</div>
</body>
</html>
class和id,因为我有一个使用这些类名和ID样式的页面一个单独的CSS文件是必需的。
我写了一个脚本,它是这样的:
function loadData() {
var mainElement=document.getElementById('body-wrapper');
var request = new XMLHttpRequest();
request.onreadystatechange = function(response) {
if (request.readyState === 4) {
if (request.status === 200) {
var jsonOptions = JSON.parse(request.responseText);
jsonOptions.forEach(function(item) ({
var mainDiv = document.createElement('div');
mainDiv.className = "preview-common";
mainDiv.forEach(function(item)({
var firstDiv=document.createElement('div');
firstDiv.className = "view-pane-common";
var secondDiv = document.createElement('div');
secondDiv.className="info-pane-common";
firstDiv.forEach(function(item) ({
var saveHover = document.createElement('p');
saveHover.className = "save-hover";
saveHover.innerHTML = "SAVE";
var imgElement = document.createElement('img');
imgElement.className = "view-image-common";
imgElement.alt = 'Some Image';
imgElement.src = "dummy-data/" + item.filename;
firstDiv.appendChild(saveHover);
firstDiv.appendChild(imgElement);
});
secondDiv.forEach(function(item) ({
var aElement = document.createElement('a');
var firstSpan = document.createElement('span');
var pElement = document.createElement('p');
var secondSpan = document.createElement('span');
firstSpan.innerHTML = item.title;
secondSpan.innerHTML = item.owner;
aElement.appendChild(firstSpan);
pElement.appendChild(secondSpan);
secondDiv.appendChild(aElement);
secondDiv.appendChild(pElement);
});
mainDiv.appendChild(firstDiv);
mainDiv.appendChild(secondDiv);
});
mainElement.appendChild(mainElement);
});
}
}
request.open('GET', 'json-data/site-data.json', true);
request.send();
}
}
这里所指向的JSON文件是在路径“JSON数据/站点data.json”和所有的媒体在路径“dummy-数据/”相对于index.html的
的JSON看起来是这样的:
[
{"filename":"preview_1.gif","owner":"Sam", "title": "First Drawing"},
{"filename":"preview_2.gif","owner":"Alex", "title": "Second Drawing"},
{"filename":"preview_3.gif","owner":"Han", "title": "Third Drawing"},
{"filename":"preview_4.gif","owner":"Tyler", "title": "Another Drawing"},
{"filename":"preview_5.gif","owner":"Jane", "title": "First Painting"},
{"filename":"preview_6.gif","owner":"Jack", "title": "Canvas"},
{"filename":"preview_7.gif","owner":"Tony", "title": "Drawing"},
{"filename":"preview_8.gif","owner":"Peter", "title": "Yet Another Drawing"},
{"filename":"preview_9.gif","owner":"Stan", "title": "Sketch"},
{"filename":"preview_10.gif","owner":"Steve", "title": "Second Drawing"},
{"filename":"preview_11.gif","owner":"Logan", "title": "Fancy Icon"},
{"filename":"preview_12.gif","owner":"Charles", "title": "Fancy Photo"},
{"filename":"preview.gif","owner":"Lucy", "title": "Some Sketch"},
{"filename":"new_preview.png","owner":"Drake", "title": "Tenth Cavas"},
{"filename":"preview.png","owner":"Terence", "title": "Last Photo"},
]
我没有得到任何输出,并没有能够理清什么是错的。有人可以帮我解释一下工作解决方案。谢谢。
如果你的文件被称为“site-data.json”,那么你为什么试图获得'html-elements.json'? – gpgekko
嘿,路径是json-data/site-data.json。但它仍然不起作用。 – codeAndCoffee
@codeAndCoffee你的示例代码调用'request.open('GET','html-elements.json',true);'。如果您将其更改为正确的网址并仍然存在问题,请修改该问题,以便我们了解您采取了哪些步骤。此外,如果您使用request.response而不是request.responseText,则不必执行JSON.parse。 – ADyson