<script type="text/javascript">
$(document).ready(function () {
var SOME_ID= 234;
});
</script>
<script type="text/javascript" src="<%= HtmlExtension.ScriptFile("~/somefile.js") %>"></script>
An issue is encountered where the .js file is attempting to utilize the value of SOME_ID, but an error indicates that SOME_ID is not defined.
Is this expected behavior based on the given code?
In order to make a local variable global, you can either use window.SOME_ID = 234; or move it outside of the anonymous function.
For example:
<script type="text/javascript">
$(document).ready(function () {
window.SOME_ID= 234;
});
</script>
or
<script type="text/javascript">
var SOME_ID= 234;
$(document).ready(function () {
});
</script>
Either way, the external file can access it as either SOME_ID (unqualified) or window.SOME_ID, since global variables are properties of the global object (which is window in browsers).
It is important to note that the local variable declared within an anonymous function will only be accessible within that specific function. To make it accessible globally, you should declare it outside of the function as shown below:
var SOME_ID = 0;
$(function () {
SOME_ID = 234;
});
The variable should be moved outside the ready handler in order to function properly, as it is currently defined within the scope of the anonymous function.
The scope of this variable is limited to the Function Expression (FE) that is provided to the ready method, meaning it cannot be accessed outside of this specific context.
If you want other scripts to access this variable, you must declare it as a global variable like so:
var ANOTHER_ID;
$(document).ready(function () {
ANOTHER_ID = 789;
});
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