<html > <body> <script type="text/javascript"> var x; var mycars=new Array(); mycars[0] ="saa"; mycars[1] ="Va"; mycars[2] ="BMW"; for(x in mycars)//x是变量用来指定变量,指定的变量可以是数组元素,也可以是对象的属性 document.write(mycars[x]+"<br />"); </script> </body> </html>
<input type="text" size="30" id="email" onchange="checkEmail()">//用户一旦改变了域的内容,checkEmail() 函数就调用 <form method="post" action="xxx.html" onsumbit="return checkForm()"> //onSubmit用于在提交表单以前验证所有的表单域 </form> <a href="http://www.baidu.com" onmouseover="alert('An onmouseOver event');return false"> //onmouseOver和onmouseOut用来创建"动态的"按钮。当鼠标移近时,触发onmouseOver事件,当鼠标移走时。触发onmouseOut事件