DjValidator

Custom validations

You can perform custom validations in 3 different ways, depending on your needs:

Using the "regexp" key:
The validation key “regexp” can be used to perform custom validations based on a specified regular expression and the flags (specified separately) must be in string format (for use with RegExp object constructor):
```
	    				
<input name="user" required data-dj-validator="regexp,^[aeiou]+$,i">
						
	    			
```
If the regular expression has commas ( reserved character ), they must be replaced by the ° character (degree) to avoid errors:
```
	    				
<input name="user" required data-dj-validator="regexp,^[aeiou]{3°5}$,i">
						
	    			
```

Using a proper function:

The call validation key allows validation by executing a user defined function, this function receives the field to be validated and must return true or false:

	    				
<input name="textinput" type="text" data-dj-validator="call,isUpperCase">

Being the user function:

	    				
function isUpperCase($field){
	value=$field.val();
	if(value==value.toUpperCase())return true;
	else return false;
}

Adding a new validation key to plugin
The global addDjvalidator function allows add a new custom validation key within the plugin:
```
	    				
$.fn.djValidator.add(key_name,message,callback);
						
	    			
```
Where:

key_name: Is the validation key that will be created

message: Is the validation message to be used

callback: Validation function to be executed, receives 2 parameters, the field to be validated "field" and the parameters "params" , these parameters are an array that starts at 1, since 0 is the validation key.

Example:

creating the “even” validator, which will validate if the number entered is even, also with a parameter so that it does not exceed a maximum value:
```
	    				
$.fn.djValidator.add('even','only even numbers.',
			function($field,params){
				value=parseInt($field.val());
				max= params[1];
				if(value%2!=1||value>max)return false;
				else return true;
			}
);
						
	    			
```
Then it can be used like any other plugin key:
```
	    				
<input type="text" data-dj-validator="even,10" required>
						
	    			
```