IT 3215: Unit 04 Discussion DQ1 Validating Form Input Data
IT 3215: Unit 04 Discussion DQ1 Validating Form Input Data
Working
with and processing bad data generally means that a lot of work will have to be
done to clean up the data on the back end. To avoid the processing of bad or
incorrect data, we incorporate form validation into our Web pages. There are
numerous levels of data validation, from ensuring that input fields are not
empty to ensuring the user data entered conforms to a specified format.
Research
and describe some tips for someone new to JavaScript to get started. In
particular, focus on at least two of the following points while providing sample
code (with comments) of each:
How can we
set the focus to certain form elements? How do you check for empty input
fields?
What is the
purpose of using client-side validation versus server-side validation? Explain.
How does a
JavaScript function validate numeric and alphabetic inputs in specific fields?
How are
regular expressions used to match patterns with strings?
How can a
regular expression be used to validate data such as a Social Security number?
Under which
circumstances would you use a validation loop?
Why is
client-side validation prior to sending data to the server important?
What is the
potential problem of overly specific form validation?
How are the
+ operator and the \n escape sequence used when working with strings to
manipulate the DOM to add messages for errors?
Response
Guidelines
Comment on
the posts of at least two other learners. Offer insights, solutions, examples,
or opinions that add depth and value to the conversation.
Learning
Components
This
activity will help you achieve the following learning components:
Understand
how to set focus to certain form elements.
View
examples of effective JavaScript comments that describe and explain variables
and functions.
Understand
how to check for empty input fields.
Understand
how a JavaScript function validates numeric and alphabetic inputs in specific
fields.
Resources
Discussion
Participation Scoring Guide.
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Use this document as a checklist for each paper you will write throughout your GCU graduate program. Follow specific instructions indicated in the assignment and use this checklist to help ensure correct grammar and APA formatting. Refer to the APA resources available in the GCU Library and Student Success Center.
☐ APA paper template (located in the Student Success Center/Writing Center) is utilized for the correct format of the paper. APA style is applied, and format is correct throughout.
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Scholarly Resources: Scholarly resources are written with a focus on a specific subject discipline and usually written by an expert in the same subject field. Scholarly resources are written for an academic audience.
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