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I currently have this code to check the website URL GET options for a specific ID, but whenever this code is run, I get a weird error: Uncaught TypeError: Undefined is not a function
Here is my code:
<script language="JavaScript">
var familyid = "id=8978566";
var corporateid = "id=8978565";
if(window.location.indexOf(familyid) === -1)
{
document.write("Family ID not found");
}
</script>
It would be awesome if i could get some guidance on this issue... I couldn't find similar issues using the .indexOf() function
617
This is because indexOf was not supported in 3.3. 1/jquery. min. js so a simple fix to this is to change it to an old version 2.1.
The indexOf() method returns the position of the first occurrence of a value in a string. The indexOf() method returns -1 if the value is not found. The indexOf() method is case sensitive.
This is a standard JavaScript error when trying to call a function before it is defined. This error occurs if you try to execute a function that is not initialized or is not initialized correctly. This means that the expression did not return a function object.
A variable that has not been assigned a value is of type undefined . A method or statement also returns undefined if the variable that is being evaluated does not have an assigned value. A function returns undefined if a value was not returned .
window.location is a Location object, not a string, and indexOf is a String (or Array) method.
If you want to search the query params, try
window.location.search.indexOf(familyId)
or if you want check the whole url,
window.location.toString().indexOf(familyId)
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