Validating a checkbox in javascript


25-Dec-2017 12:05

Using vanilla Java Script we can prevent form submission as follows: All this does is confirm before submitting the form that the checkbox is checked.If not, an alert is displayed and focus is moved to the checkbox.Not the prettiest solution, but functional in all browsers with Java Script enabled.Adding HTML5 validation to the checkbox is actually very simple.While HTML5 form validation is typically about missing or invalid text inputs, there are other form element types that also require attention. Suppose you have a form on your website that at the bottom asks people to "accept the Terms and Conditions" or something similar.Basically you don't want the form to be submitted unless this is checked.Anyways, may just switch over to a wp plugin, but thought I'd try to sharpen up my development skills a little lol Cheers! When I copied and pasted your code into a html file and ran it, my FF and IE spat out an error.

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You need to check the The block of Java Script below the form is assigning our custom error message to the checkbox when the page loads.If you put an alert() inside and just below your IF block I think you'll find the alert() inside the IF block will never be executed, hence your form is always submitted whether you check any boxes or not.



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