JavaScript for client-side data validation

Javascript| Client | data

file://If the input content is not satisfied, it is not committed, and the focus automatically jumps to that location. file:// is much more useful than sending the data at the server side after it is sent! Scripting code: if (TheForm.title.value = "") { Alert ("Please enter a title!") "); TheForm.title.focus (); return (false); } if (TheForm.detail.value = "") { Alert ("Please enter the content!") "); TheForm.detail.focus (); return (false); } if (TheForm.name.value = "") { Alert ("Please enter the author!") "); TheForm.name.focus (); return (false); } if (TheForm.email.value = "") { Alert ("Please enter the mailbox!") "); TheForm.email.focus (); return (false); } } --> HTML page code: Your name: Your mailbox: Article title: Article content: Some notes: file://to take the original literature of the website publishing page.