日期:2014-05-16 浏览次数:20495 次
<html> <head> <script type="text/javascript"> function clickSel() { var sel1 = document.getElementById("sel1"); var sel2 = document.getElementById("sel2"); var sel3 = document.getElementById("sel3"); sel2.selectedIndex = sel3.selectedIndex = sel1.selectedIndex; sel2.onfocus = function() { var index = this.selectedIndex; this.onchange = function() { this.selectedIndex = index; }; }; } </script> </head> <body> <select id="sel1" onchange="clickSel()"> <option>opts1</option> <option>opts2</option> <option>opts3</option> <option>opts4</option> <option>opts5</option> <option>opts6</option> </select> <select id="sel2"> <option>opts1</option> <option>opts2</option> <option>opts3</option> <option>opts4</option> <option>opts5</option> <option>opts6</option> </select> <select id="sel3"> <option>opts1</option> <option>opts2</option> <option>opts3</option> <option>opts4</option> <option>opts5</option> <option>opts6</option> </select> </body> </html>