方法一: 用 mouseenter() 和 mouseleave() 實現
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> #test {width: 100px; height: 100px;} </style> </head> <body> <div id="test">123132</div> </body> </html> <script src="jquery-3.4.1.js" type="text/javascript" charset="utf-8"></script> <script type="text/javascript"> $(function() { $('#test').mouseenter(function() { $(this).css('background', 'red'); }); $('#test').mouseleave(function() { $(this).css('background', '#fff'); }); }); </script>
方法二:用 hover() 實現(推薦使用)
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> #test {width: 100px; height: 100px;} </style> </head> <body> <div id="test">123132</div> </body> </html> <script src="jquery-3.4.1.js" type="text/javascript" charset="utf-8"></script> <script type="text/javascript"> // 語法$('selector').hover(fn1, fn2); fn1鼠標經過時的處理 fn2鼠標離開時的處理 $(function() { $('#test').hover(function(){ $(this).css('background', 'red'); }, function() { $(this).css('background', '#fff'); }); }); </script>