Example code for val() form value assignment in Jquery_jquery

jQuery provides the powerful val() method to handle value-related operations.
Get the value of a single select and the value of a multi-select.

Copy code The code is as follows:

HTML code:

< /p>


Single
Single2
< ;/select>

Multiple
Multiple2
Multiple3

jQuery code:
$("p").append(
" Single: " $("#single").val()
" Multiple: " $("#multiple").val() .join(", ")
);
Result:
[

Single:SingleMultiple:Multiple, Multiple3< ;/p>]

Get the value in the text box
HTML code:

Copy codeThe code is as follows:

jQuery code:
$("input").val() ;

Result:
some text
The following is how var() can get/assign the form element value

Copy code The code is as follows:

< body>

 
< input type="button" value="Input">

Note: var data=$("#myId").val();
If myid does not exist, data is undefined