The content of this article is about how to use the focus selector? How to use the focus selector has certain reference value. Friends in need can refer to it. I hope it will be useful to you. helped.
focus selector
: The focus selector is used to specify the style used when the "form element" obtains the cursor focus, mainly in single-line text box text, multi-line text box textarea and other form elements. Used when getting focus and entering text.
Generally, getting focus and losing focus are for the two form elements of single-line text box text and multi-line text box textarea.
Example:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS3 :focus选择器</title>
<style type="text/css">
input:focus
{
outline:1px solid red;
}
</style>
</head>
<body>
<p><label for="name">姓名：</label><input type="text" name="name"/></p>
<p><label for="email">邮箱：</label><input type="text" name="email"/></p>
</body>
</html>The effect is as follows:
Analysis:
When the text box gets focus here, Use the outline attribute to add a red outline to the text box. The effect is as follows:
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