此代码Javascript和Parse有什么问题
[英]What is wrong with this code Javascript and Parse
问题描述
I am using javascript and the parse API and i have this code 
我正在使用javascript和parse API，并且我有此代码
<script type="text/javascript">
Parse.initialize("APPID", "JAVASCRIPTCODE");
var currentUser = Parse.User.current().get("FirstName");
document.getElementById("fname").value = currentUser;
</script>
<input type=text id="fname" />
however the code is not adding the data from javascript to the text box where am i going wrong. 但是代码没有将来自javascript的数据添加到文本框中，这是我出错的地方。
1 个解决方案
解决方案1
1 已采纳 2015-07-24 10:37:47
The problem is that you're accessing the element before it is added into DOM . 问题是您在将元素添加到DOM之前正在访问它。
You can wrap the last statement in DOMContentLoaded 您可以将最后一条语句包装在DOMContentLoaded
The DOMContentLoaded event is fired when the document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading (the load event can be used to detect a fully-loaded page).
document.addEventListener("DOMContentLoaded", function(event) {
document.getElementById("fname").value = fname;
});
Or, you can also move your <script> at the end of <body> tag. 或者，您也可以将<script>移到<body>标记的末尾。
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