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jQuery input vs input
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jQuery tutorial for beginners - jQuery input vs input

5.0 (2)
25 learners

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This course includes

  • 22.5 hours of video
  • Certificate of completion
  • Access on mobile and TV

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Link for all dot net and sql server video tutorial playlists https://www.youtube.com/user/kudvenkat/playlists?sort=dd&view=1 Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2015/03/jquery-input-vs-input.html Healthy diet is very important both for the body and mind. If you like Aarvi Kitchen recipes, please support by sharing, subscribing and liking our YouTube channel. Hope you can help. https://www.youtube.com/channel/UC7sEwIXM_YfAMyonQCrGfWA/?sub_confirmation=1 In this video we will discuss the difference between $(input) and $(:input) selectors $(:input) selects all input, textarea, select and button elements where as $(input) just selects elements with an input tag. The following is the HTML used in the examples. Replace < with LESSTHAN symbol and > with GREATERTHAN Symbol. <html> <head> <title></title> <script src="jquery-1.11.2.js"></script> </head> <body style="font-family:Arial"> First Name : <input type="text" value="John" /> <br /><br /> Last Name : <input type="text" value="Major" /> <br /><br /> Gender : <input type="radio" name="gender" checked="checked" value="Male">Male <input type="radio" name="gender" value="Female">Female <br /><br /> Skills : <input type="checkbox" name="skills" checked="checked" value="JavaScript" />JavaScript <input type="checkbox" name="skills" checked="checked" value="jQuery" />jQuery <input type="checkbox" name="skills" value="C#" />C# <br /><br /> Country: <select> <option selected="selected" value="USA">USA</option> <option value="India">India</option> <option value="UK">UK</option> </select> <br /><br /> Summary : <br /> <textarea>I am a Senior Dot Net Developer with 10 years experience</textarea> <br /><br /> <input type="submit" value="submit" /> </body> </html> Now we want to get the text value from all the textboxes. On this page we have 2 textboxes 1. First Name 2. Last Name jQuery code to get textbox value using $(input) <script type="text/javascript"> $(document).ready(function () { $('input[type="text"]').each(function () { alert($(this).val()); }); }); </script> jQuery code to get textbox value using $(:input) <script type="text/javascript"> $(document).ready(function () { $(':input[type="text"]').each(function () { alert($(this).val()); }); }); </script> Which one is better for performance $('input[type="text"]') or $(':input[type="text"]') $('input[type="text"]') is better for performance over $(':input[type="text"]'). This is because $(':input[type="text"]') needs to scan all input elements, textarea, select etc, where as $('input[type="text"]') scans only input elements. So if you want to find elements with an input tag, it is always better to use $('input[type="text"]') over $(':input[type="text"]')

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