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<head> <title>简单的Select联动菜单代码</title> <script type="text/javascript"> var arr_province = ["==请选择==", "篮球", "足球", "乒乓球", "其他"]; var arr_city = [ ["==请选择=="], ["A01", "A02", "A03", "A04", "A05"], ["L01", "L02", "L03", "L04", "L05"], [], [], ]; function init() { var province = document.form1.province; province.style.width = 150 + "px"; var city = document.form1.city; city.style.width = 150 + "px"; //给province赋值高度，才能在其里面写入内容 province.length = arr_province.length; for (var i = 0; i < arr_province.length; i++) { province.options[i].text = arr_province[i]; province.options[i].value = arr_province[i]; } //设置默认被选中的选项 var index = 0; province.selectedIndex = index; //给city赋值高度，才能在其里面写入内容 city.length = arr_city[index].length; for (var j = 0; j < arr_city[index].length; j++) { city.options[j].text = arr_city[index][j]; city.options[j].value = arr_city[index][j]; } } function select_change(num) { var city = document.form1.city; city.length = 0; city.length = arr_city[num].length; for (var i = 0; i < arr_city[num].length; i++) { city.options[i].text = arr_city[num][i]; city.options[i].value = arr_city[num][i]; } } </script></head><body οnlοad="init()"> <form name="form1"> 税总：<select name="province" οnchange="select_change(this.selectedIndex)"></select> 类别：<select name="city"></select> </form></body></html>
另一种：
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