js动态改变样式属性(className属性)
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>className属性</title> <style type="text/css"> .myDiv{ height: 50px; width: 50px; border: 1px solid red; } .newStyle{ height: 150px; width: 150px; border: 2px solid pink; } </style> </head> <body> <div class="myDiv" id="myDiv"></div> <script type="text/javascript"> var div= document.getElementById("myDiv"); div.onclick=function(){ div.className="newStyle"; //newStyle是我们需要设置class的名称 } </script> </body> </html>