How do external js work?? From what I've read this should work why doesn't it?
Question
I'm having a very simple problem understanding the scope of variables with external javascript pages. From what I read if I call an external sheet all global functions and variables should be able to be accessed. I can't seem to get it to work. Knowing the right question to ask to search is the hard part and I could comb through the internet for days for a problem someone could probably explain easily and quickly. I have seen something simliar in this tutorial http://www.tizag.com/javascriptT/javascriptexternal.php , I searched quickly stack found this: What is the scope of variables in JavaScript? and even as I write this I'm looking for the answer.
Simply I have an external sheet in the same directory and the file name is trial.js. Then I have an index.html simply trying to use the global function from the external trial.js to the index page. This is possible? according to the tizag tutorial using a function in the button onclick attribute. Also many frameworks work on this principle too right? Although I know they are a bit more sophisticated using $(a)<~~~references?? or something. Thanks for anyone's help I'll continue to look but hopefully the internet can help!!
localhost/trial.js:
function trySomething(){
alert("trying");
}
localhost/index.html:
<html>
<head>
<title>Objects222</title>
<script src="trial.js"></script>
</head>
<body>
<script type="text/javascript">
trySomething();
</script>
Hello
</body>
</html>
It was originally in resource but I wanted to make it even simplier. using firefox and chrome doesn't work for me??? Those who say it's working upon loading the page you get an alert that says "trying" ? Anyone any ideas why it might not be working locally. I cleared all my cache and tried renaming to force upload. Also used Chrome, Firefox, and IE still no alert on load @ localhost.
3 answers
solution1
0 2013-01-08 01:15:17
I'm not certain, but I don't think your supposed to have a / before "Resources". ex. "Resources/myscript" would work. Also, if "trial.js" is in the same directory as "index.html" then you don't need "Resources/".
solution2
0 2013-01-08 01:16:18
我刚刚在Apache上进行了测试， 并假设您的外部JavaScript文件位于一个名为resource的文件夹中 ，它可以正常工作。
solution3
0 2013-01-08 01:20:58
This seems like it should be fine so I copied your code and tested it and it is working for me. The one change I made was to remove the first slash in the script src because my "resource" folder isn't in the site root. Is your js file definitely being loaded?
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