Use of functions in Facebook's JavaScript SDK
I got the Facebook login/logout functionality to work, but had to do it with this un-elegant code like this:
<script type="javascript">
function loadfb() {
var e = document.createElement('script'); e.async = true;
e.src = document.location.protocol + '//connect.facebook.net/es_LA/all.js';
document.getElementById('fb-root').appendChild(e);
};
</script>
<body onload="loadfb()">
I plan on putting that Facebook login button on all the pages of the site, so I really don't want to have this function called onload of every page.
Is this function necessary? I don't completely understand what it is for. What is a better way to do this so I can take it out of my onload?
Th开发者_StackOverflowanks!
This code is for asynchronous loading of the Facebook JavaScript SDK. What it does is create the tag
<script async scr="https://connect.facebook.net/es_LA/all.js" ></script>
inside the <div id="fb-root"></div> element. While loading the SDK asynchronously is considered better practice, you can leave out this code and manually enter the script tag yourself - eg:
<div id="fb-root"></div>
<script src="http://connect.facebook.net/es_LA/all.js"></script>
<script>
FB.init({
...
});
</script>
加载中,请稍侯......
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