Reset all Fields using jQuery

Introduction

This is a common requirement while developing a web form which consists of various Input controls like Textbox, Radio Button, Checkbox, DropdownList, File Upload etc. We also need to have a button which clears the value of all the fields. Generally we named this Button as Reset.

Background

Every developers have their different approach of Resetting all the controls on a single click. I am explaining a simple jQuery function which is called on the click of button and reset values of all the controls used in the web page.

Using the code

1. Take a reference of latest jQuery in your source. I am using jquery-1.10.2.js in my example.

2. In the form tag of your Web form add your controls which you would like to use in the page.

3. Simply Copy and Paste the below code in the script tag :

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 <script type="text/javascript">         function resetFields(form) {             $(':input', form).each(function() {                 var type = this.type;                 var tag = this.tagName.toLowerCase(); // normalize case                 // to reset the value attr of text inputs,                 // password inputs, fileUpload and textareas                 if (type == 'text' || type == 'password' || tag == 'textarea' || type=='file')                     this.value = "";                 // checkboxes and radios need to have their checked state cleared                                 else if (type == 'checkbox' || type == 'radio')                     this.checked = false;                 // select elements need to have their 'selectedIndex' property set to -1                 // (this works for both single and multiple select elements)                 else if (tag == 'select')                     this.selectedIndex = 0;             });         }     </script>

1. And then simply call this function on button OnClientClick event.

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<asp:Button ID="Button1" runat="server" Text="Reset" OnClientClick="resetFields(form1);" />

1. Press f5 and check.

转至：http://www.dfwlt.com/forum.php?mod=viewthread&tid=699&extra=