在web页面中，经常需要使用select控件来显示div的显示与隐藏，实现这个方法主要用到了setAttribute方法，以下为示例代码 [html]view plaincopy<html> <title>通过选择项显示不同的结果</title> <head> <scripttype="text/JavaScript"> functionshowdiv() { vardoc=document; varcitytext=doc.getElementById("city").value; vardiv1=doc.getElementById("div1"); vardiv2=doc.getElementById("div2"); vardiv3=doc.getElementById("div3"); switch(citytext) { case"广州": div1.setAttribute("style","display"); div2.setAttribute("style","display:none"); div3.setAttribute("style","display:none"); doc.getElementById("text1").value=citytext; break; case"南昌": div1.setAttribute("style","display:none"); div2.setAttribute("style","display"); div3.setAttribute("style","display:none"); doc.getElementById("text2").value=citytext; break; case"沈阳": div1.setAttribute("style","display:none"); div2.setAttribute("style","display:none"); div3.setAttribute("style","display"); doc.getElementById("text3").value=citytext; break; } } </script> </head> <body> <selecttitle="城市"id="city"onchange="showdiv()"> <optionselectedvalue="广州">广州</option> <optionvalue="南昌">南昌</option> <optionvalue="沈阳">沈阳</option> </select> <divid="div1"style="display:none">您选择了广东的省会<inputtype="text"id="text1"value=""/></div> <divid="div2"style="display:none">您选择了江西的省会<inputtype="text"id="text2"value=""/></div> <divid="div3"style="display:none">您选择了辽宁的省会<inputtype="text"id="text3"value=""/></div> </body> </html>
