Create Custom Javascript Validation Popup | Code Factory

Reference Link : Link

Download Js and Css : Download | Demo

Preview :

Description :

An easy to use yet fully customizable form field validator built using native JavaScript with no 3rd JavaScript libraries.

Predefined validation rules :

  • required
  • notzero
  • integer
  • float
  • min
  • max
  • between
  • name
  • lastname
  • phone
  • email
  • length
  • maxlength
  • minlength
  • maxfilesize
  • fileextension

How to use it :

Import the main JavaScript file js-form-validator.min.js and css file forms.css into your html file.

<link href=”css/forms.css” rel=”stylesheet”>
<script src=”js/js-form-validator.min.js”></script>

Apply the validation rules to the target form fields using data-rule attributes. You can apply multiple rules to the same field by seperate the rules with "|".

<form action="#" id="form">
<br> Emp code : <br>
<input type="text" name="emp_code" id="emp_code" data-rule="emp_code|required">
<br>
<br> Emp Name : <br>
<input type="text" name="emp_name" id="emp_name" data-rule="emp_name|required">
<br>
<br> Custom : <br>
<input type="text" name="custom" id="custom" data-rule="code_factory|required">
<br>
<br> <input type="Submit">
</form>

Initialize the library and done.

new Validator(document.querySelector('#form'), function(err, res) {
return res;
}

Add your own validation rules and error messages :

new Validator(document.querySelector('#form'), function(err, res) {
return res;
}, options = {
rules : {
code_factory : function(value) {
return (value.trim().toLowerCase() === 'codefactory');
}
},
messages : {
en : {
code_factory : {
incorrect : 'Error ;-)'
}
}
}
});

OR

Add below code in js js-form-validator.min.js.

messages: {
en: {
emp_code: {
empty: "Please, enter Employee Code",
incorrect: "Only digits allow"
},
emp_name: {
empty: "Please, enter Employee Name",
incorrect: "Only alphabets allow"
}
}
},
rules: {
emp_code: function(a) {
return (new RegExp(/^[1-9]{1,}[0-9]{0,}$/g)).test(a)
},
emp_name: function(a) {
return (new RegExp(/^[A-Za-z]{0,}$/g)).test(a)
}
},

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