VirtualMV/JavaScript/Forms/getElement
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< VirtualMV | JavaScript
Introduction
Overview
- We can simplify getting values from a form using getElementById method.
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By the end of this page you will be able to:
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Refer to: http://www.w3schools.com/jsref/met_doc_getelementbyid.asp
Example that compares using DOM and the getElementById method
<html> <head> <script type="text/javascript"> function displayResult() { alert( "Name is " + document.myForm.txtFName.value + " " + document.getElementById("txtLName").value); } </script> </head> <body> <form name="myForm"> <p>Enter Your Firstname:<input type="text" name="txtFName" value="" /><br /> Enter Your Lastname:<input type="text" id="txtLName" value="" /></p> <p><button type="button" onclick="displayResult()">Display Name</button></p> </form> </body> </html>
Common error message getElementById (ID)
Error message: File.html:13 Uncaught TypeError: document.getElementByID is not a function
Solution
Something that is really hard to catch is as JavaScript is Case sensitive it is easy to have ID rather than Id.
Note the difference between input attribute name and id.
References
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virtualMV | Superquick wiki guide | Please give me some feedback |
VirtualMV/JavaScript/Forms/getElement. (2024). In WikiEducator/VirtualMV wiki. Retrieved December 22, 2024, from http:https://wikieducator.org/VirtualMV/JavaScript/Forms/getElement (zotero)
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