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jQuery Validation Plugin Made Easy Tutorial

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If you need to do some client side validation, the bassistance.de jQuery Validation Plugin is the best one there is. However, it took me a little while to figure it out. So, here it is a little easier! As always, just study the demos source code for clarification on anything you don't understand.

In this order...

Step 1: Download and link to jQuery.

Step 2: Download and link to the jQuery Validation plugin.

Step 3: Fire the jQuery Validation Plugin (in it's most simplest form).

/* Fire Valaidate */
$(document).ready(function(){
   $("#form").validate({
      rules: {
         name: {
            required: true
               }
         },
         messages: {
            name: "Required Field"
         }
     });
});
		

Step 4: jQuery Validation CSS (in it's most simplest form). Note: the jQuery Validation Plugin adds class error to the inputs/labels. You only style them!

#form label.error {
color:red;
}
#form input.error {
border:1px solid red;
}
		

Step 5: jQuery Validation HTML (in it's most simplest form).

<form id="form" method="" action="">
   <label for="name">Name</label>
   <input type="text" id="name" name="name">
</form>
		

Custom Validation Rules: The jQuery Validation Plugin comes standard with a lot of validation rules already built in, but if you need to write another, add the following. A more detailed article is written on it here. This particular custom validation below, prevents URL's from being entered into the comments area.

/* Fire Valaidate */
$(document).ready(function(){
   $.validator.addMethod("nourl", 
      function(value, element) {
         return !/http\:\/\/|www\.|link\=|url\=/.test(value);
            }, 
         "No URL's"
      );
   $("#form").validate({
      rules: {
         comments: {
            nourl: true
             }
         },
         messages: {
            comments: "No URL's"
         }
     });
});
		

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