限制输入一些个人信息

Question

I want to check what users type in Textarea.

Actually, how can I restrict typing phone numbers and e mail addresses in description box?

So for example:

Hi, I am selling a Bugatti Veyron
Age: 2010
Color: Black
You can contact me on 066/656-656 or 055646646
or via mail [e-mail]

If someone tries to enter something like this I want to automatically remove personal contact details.

So, please help, how can I do it?

Answer 1

Use Regex and do something like this :

Here's an example (jsFiddle)

HTML

<textarea></textarea><br>
<button>Test</button><br>
<span class="result"></span>

Javascript:

function validateEmail(email) { 
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    $('.result').html(re.test(email));
    if(re.test(email)){
        $('.result').html("Contain email");
    } else {
        $('.result').html("Do not contain email");
    }
}

$('button').click(function(){
    validateEmail($('textarea').val());
});

Note that I only look for email. But you can use other Regex to look for phone, you just have to search for something like "javascript regex phone" on Google.