Email harvesting is a real problem nowadays; publishing an email address on a web page means exposing it to automated email collection softwares. Once it's been collected, there no way of getting rid of spam.

The best way to avoid this is to obfuscate and encode email addresses; this simple JavaScript does exactly that. It splits an address in six different parts, so that bots are not able to recognize it, and it also encode the @ symbol and the . (dot) using ASCII codes, just to make it harder for bots to decode it. Even if the email harvesting software can read JavaScript and put the different parts of the address together, it would obtain an useless text like this: [email protected] instead of [email protected].

This JavaScript uses regular expressions to check that a string contains a valid email address. Note that it won't catch all invalid emails, like most similar scripts. However, for most intents and purposes, this JavaScript should serve its purpose well, by rejecting common email typos while leaving room for obscure yet valid emails to pass.

This JavaScript is an easy way to copy and email selected html text that is on a web page. You can set this up as a Favorites item in Internet Explorer to make it simply to be able to do the emailing! Just highlight text on a page and then click the favorites link. The hightlighted input text will be placed in an email from your default mail program, ready for you to add a name and send!

This JavaScript verifies that a string looks like a real e-mail address.

Prevent e-mail link harvesting by spammer's robots. Nothing is displayed in the file where this script is used, other than an empty span element. The mailto link is added dynamically, and will not show up even when you "View Source".

A script to insert a hidden value in a form with a time date stamp.

Have a Web page with multiple e-mail addresses? Use this JavaScript to protect them from spambots. Simple to use.

Protect your e-mail address from spambots. In addition to hiding your e-mail address, this JavaScript also adds a subject line.

This Web form utilizes the sender's e-mail. This form has a validation for information added; if all is entered correctly, the sender will be directed to a 'thank you' page.

Use this JavaScript to validate Email addresses on the client-side. To validate an Email address, use the function in the following manner: isEmail(someEmailAddress). The function returns true if the Email is valid, else the function returns false.