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Client-side validation
Learn Client-side validation in Web Development How-To with a focused explanation, a topic-specific example, and a mastery check.
12 min read
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Beginner
web-how-to-009.html
html
<form id="f"><label>Email <input id="email" type="email" required></label><button>Submit</button></form><script>f.onsubmit=e=>{if(!f.checkValidity()){e.preventDefault();f.reportValidity()}}</script>What to watch
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Original Syntaxis Content · Original Syntaxis Content