用 CSS 设置获取焦点的元素的样式
为了选择有焦点的元素,使用:focus 选择器。你可以尝试运行以下代码来实现:focus 选择器 −
示例
<!DOCTYPE html> <html> <head> <style> input:focus { background-color: green; } </style> </head> <body> <form action = ""> Subject <input type = "text" name = "subject"><br> Student: <input type = "text" name = "student"><br> Age: <input type = "number" name" = age><br> <input type = "submit" value="Submit"> </form> </body> </html>
广告