jquery or javascript to raise alert on error

I have date fields several of them.
If text box input error, on button click,the alert message pops and have to correct error. I cam take bootstrap solution as well.
zachvaldezAsked:
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Rainer JeschorCommented:
Hi,
depending on your current implementation (e.g. using jQuery or not) you might want to use some validation plugins like
http://formvalidator.net/
or
http://jqueryvalidation.org/
You just have to properties to you form and the validation engine will verify before submitting the form.
HTH
Rainer

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zachvaldezAuthor Commented:
NIce examples and links but how to piece them all together...
zachvaldezAuthor Commented:
The plugin suggestion is a good solution.
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