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一个最简单的级联下拉菜单
时间：2021-04-30 10:10:25 | 栏目：
JavaScript代码
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="gb2312"> <head> <head> <title> 代码实例:级联菜单 </title> <meta http-equiv="content-type" content="text/html; charset=gb2312" /> <meta name="author" content="枫岩,CNLei.y.l@gmail.com"> </head> <body> <select id="BigCate" name="BigCate" size="1" onchange="Redirect(this.options.selectedIndex)"> <option value="">人物</option> <option value="">地理</option> <option value="">野生动物</option> <option value="">科技</option> <option value="">静物</option> <option value="">设计</option> <option value="">新闻</option> <option value="">宠物</option> <option value="">植物</option> <option value="">娱乐</option> <option value="">生活亮点</option> <option value="">体育</option> </select> <select id="SmlCate" name="SmlCate" size="1"> <option value="1">日常生活</option> <option value="2">旅行</option> <option value="3">聚会</option> <option value="4">婚庆</option> <option value="5">节日</option> <option value="6">美女写真</option> <option value="7">人体摄影</option> <option value="8">网友自拍</option> <option value="9">演艺明星</option> <option value="10">体育明星</option> <option value="11">政坛名人</option> <option value="12">其它</option> </select> <script type="text/javascript"> <!-- var groups = document.getElementById("BigCate").options.length; var group = new Array(groups) for (i = 0; i < groups; i ++) group[i] = new Array() group[0][0] = new Option("日常生活","1") group[0][1] = new Option("旅行","2") group[0][2] = new Option("聚会","3") group[0][3] = new Option("婚庆","4") group[0][4] = new Option("节日","5") group[0][5] = new Option("美女写真","6") group[0][6] = new Option("人体摄影","7") group[0][7] = new Option("网友自拍","8") group[0][8] = new Option("演艺明星","9") group[0][9] = new Option("体育明星","10") group[0][10] = new Option("政坛名人","11") group[0][11] = new Option("其它","12") group[1][0] = new Option("现代建筑","40") group[1][1] = new Option("文化遗产","41") group[1][2] = new Option("自然风景","42") group[1][3] = new Option("其它","43") group[2][0] = new Option("哺乳类","80") group[2][1] = new Option("鸟类","81") group[2][2] = new Option("鱼类","82") group[2][3] = new Option("昆虫","83") group[2][4] = new Option("其它","84") group[3][0] = new Option("计算机","120") group[3][1] = new Option("军事","121") group[3][2] = new Option("太空","122") group[3][3] = new Option("其它","123") group[4][0] = new Option("邮票","160") group[4][1] = new Option("钱币","161") group[4][2] = new Option("饰物","162") group[4][3] = new Option("玩具","163") group[4][4] = new Option("模型","164") group[4][5] = new Option("书法","165") group[4][6] = new Option("绘画","166") group[4][7] = new Option("篆刻","167") group[4][8] = new Option("其它","168") group[5][0] = new Option("CG","200") group[5][1] = new Option("素材","201") group[5][2] = new Option("其它","202") group[6][0] = new Option("时政","240") group[6][1] = new Option("文化","241") group[6][2] = new Option("战争","242") group[6][3] = new Option("社会","245") group[6][4] = new Option("其它","246") group[7][0] = new Option("狗","280") group[7][1] = new Option("猫","281") group[7][2] = new Option("金鱼","282") group[7][3] = new Option("鸟","284") group[7][4] = new Option("其它","285") group[8][0] = new Option("花卉","320") group[8][1] = new Option("树木","321") group[8][2] = new Option("其它","322") group[9][0] = new Option("搞笑","360") group[9][1] = new Option("游戏","361") group[9][2] = new Option("动漫","362") group[9][3] = new Option("人体彩绘","363") group[9][4] = new Option("电影海报","364") group[9][5] = new Option("其它","365") group[10][0] = new Option("家居","400") group[10][1] = new Option("汽车","401") group[10][2] = new Option("手机","402") group[10][3] = new Option("数码产品","403") group[10][4] = new Option("服饰","405") group[10][5] = new Option("其它","404") group[11][0] = new Option("奥运","440") group[11][1] = new Option("篮球","441") group[11][2] = new Option("足球","442") group[11][3] = new Option("其它","443") var temp = document.getElementById("SmlCate"); function Redirect(x){ for (m = temp.options.length-1; m > 0; m --) temp.options[m] = null for (i = 0; i < group[x].length; i ++){ temp.options[i] = new Option(group[x][i].text,group[x][i].value); } temp.options[0].selected = true } //--> </script> </body> </html>
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