After submitting the html drop-down menu, the selected value is retained instead of returning to the default value
|
Copy code The code is as follows:<html> <body> <?php // Get the select value $select_value = isset($_GET['select']) ? $_GET['select'] : ''; ?> <form action="?"> <select name="select"> <option value="">default</option> <option value="option1" <?php // If the value obtained above is the same as the value in this option, // Print selected, making this option selected by default echo $select_value == 'option1' ? 'selected' : '' ?>>option1</option> </select> <input type="submit" value="submit" /> </form> </body> </html> This script should be added to each option, and if there are multiple options, they can be printed in a loop. |
<<: Solution to css3 transform transition jitter problem
>>: Implementing a simple age calculator based on HTML+JS
Recommend
A simple LED digital clock implementation method in CSS3
This should be something that many people have do...
How to draw a mind map in a mini program
Table of contents What is a mind map? How to draw...
Implementing a web calculator based on JavaScript
This article shares the specific code of JavaScri...
Steps to install GRUB on Linux server
How to Install GRUB for Linux Server You cannot u...
Practical skills that must be mastered in calling UNI-APP components in the easycom mode
This article is intended to be a starting point f...
This article teaches you how to play with CSS border
Border Style The border-style property specifies ...
Detailed steps for porting busybox to build a minimal root file system
Busybox: A Swiss Army knife filled with small com...
CSS form validation function implementation code
Rendering principle In the form element, there is...
Lombok implementation JSR-269
Preface Introduction Lombok is a handy tool, just...
Pure CSS3 to create page switching effect example code
The one I wrote before is too complicated, let’s ...
MYSQL A question about using character functions to filter data
Problem description: structure: test has two fiel...
2017 latest version of windows installation mysql tutorial
1. First, download the latest version of MySQL fr...
Implementation of CSS fixed layout on both sides and adaptive layout in the middle
Analyze four common methods and principles: float...
How to reset the password if the Ubuntu 18.04 server password is forgotten or tampered with
Recently, two accounts on the server were hacked ...
Reasons and solutions for slow MySQL query stuck in sending data
Because I wrote a Python program and intensively ...