Created
July 6, 2013 20:36
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Validate forms data with jQuery without plugin
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| <!doctype html> | |
| <html lang="pt_BR"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <link rel="stylesheet" href="style.css"> | |
| <title>Validate form with jQuery</title> | |
| </head> | |
| <body> | |
| <form action="" method="post" id="formExample"> | |
| <fieldset> | |
| <ol> | |
| <li> | |
| <label for="name" class="label01">Name</label> | |
| <input type="text" name="name" id="name" /> | |
| <span class="erro" style="display:none">Your name</span> </li> | |
| <li> | |
| <label for="email" class="label01">Email</label> | |
| <input type="email" name="email" id="email" /> | |
| <span class="erro" style="display:none">Your email</span> | |
| </li> | |
| <li><button type="submit" name="send_data" class="alignright btn01">Send</button> </li> | |
| </ol> | |
| </fieldset> | |
| </form> | |
| <script src="http://code.jquery.com/jquery.js"></script> | |
| <script src="validate.js"></script> | |
| <script> | |
| (function(){ | |
| $form = $('#formExample'); | |
| $form.on('submit', function(evt){ | |
| var that = $(this); | |
| if(validate(that)) { | |
| console.log('ok!'); | |
| } else { | |
| console.log('fields empty'); | |
| } | |
| evt.preventDefault(); | |
| }) | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| body { | |
| margin: 0; | |
| padding: 0; | |
| } | |
| .error-field { | |
| border:1px solid #C00 | |
| } | |
| .error { | |
| display:block; | |
| margin:10px 0 10px 150px; | |
| color:#C00; | |
| } |
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| function validate(selector, show_errors) { | |
| var show_errors = (show_errors!=undefined)?show_errors:true; | |
| var valid = true; | |
| $(selector).find("input, textarea, select").each(function() { | |
| var $field = $(this); | |
| var $exe = $('.exe'); | |
| var $error = $field.parents("li:first").find(".erro"); | |
| var _val = ($field[0].tagName == "SELECT")?$field.find("option:selected").val():$field.val(); | |
| if ($.trim(_val) == '' && $error.size()>0) { | |
| if(show_errors) { | |
| $field.addClass("error-field"); | |
| $error.fadeIn(); | |
| $exe.hide(); | |
| $field.focus(function() { | |
| $field.removeClass("error-field"); | |
| $error.fadeOut(); | |
| }); | |
| } | |
| valid = false; | |
| } | |
| }); | |
| return valid; | |
| }; |
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