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In HTML, how can the drop-down menu retain the selected value after submission and not return to the default value?

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Release： 2018-01-27 09:58:19
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This time I will show you how to keep the selected value of the drop-down menu without returning to the default value after submission in HTML. What are the precautions for retaining the selected value of the drop-down menu without returning to the default value after submission in HTML? 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>
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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 head structure in HTML

How to use vertical-align to make input elements and img element alignment

The above is the detailed content of In HTML, how can the drop-down menu retain the selected value after submission and not return to the default value?. For more information, please follow other related articles on the PHP Chinese website!

Related labels：
html Drop-down menu
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