How to make the HTML drop-down menu retain the selected value after submission and not return to the default value-HTML Tutorial-php.cn

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How to make the HTML drop-down menu retain the selected value after submission and not return to the default value

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Jan 31, 2018 am 09:42 AM

htmlDrop-down menureserve

This time I will show you how to make the html drop-down menuretain the selected value after submission and not return to the default value. After the html drop-down menu is submitted, retain the selected value and not return to the default valueNotes What are they? The following is a practical case. Let’s take a look.

The code is as follows:

<html> 
<body> 
<?php 
// 获取select值 
$select_value = isset($_GET[&#39;select&#39;]) ? $_GET[&#39;select&#39;] : &#39;&#39;; 
?> 
<form action="?"> 
<select name="select"> 
<option value="">default</option> 
<option value="option1" <?php 
// 如果在上面获取的值和这个option里的值一样， 
// 就打印selected，让这个option默认被选中 
echo $select_value == &#39;option1&#39; ? &#39;selected&#39; : &#39;&#39; 
?>>option1</option> 
</select> 
<input type="submit" value="submit" /> 
</form> 
</body> 
</html>

I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to other related articles on the php Chinese website!

Related reading:

How to use the new semantic tag feature of H5 to read files using the FileReader distribution of

## How to use it and an introduction to its method

How to set the width and height of the hyperlink

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