JS特效-N级的联动Select下拉框_js

<!DOCTYPE <a href="https://www.gaodaima.com/go.html?url=http://www.gaodaima.com/tag/html" title="html" rel="nofollow" target="_blank">html</a> PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “<a href="https://www.gaodaima.com/go.html?url=http://www.w3.org/TR/x" rel="nofollow">http://www.w3.org/TR/x</a><a href="https://www.gaodaima.com/tag/html" title="查看更多关于html的文章" target="_blank">html</a>1/DTD/xhtml1-transitional.dtd”><html xmlns=”<a href="https://www.gaodaima.com/go.html?url=http://www.w3.org/1999/xhtml”><head><meta" rel="nofollow">http://www.w3.org/1999/xhtml”><head><meta</a> http-equiv=”Content-Type” content=”text/html; charset=gb2312″ /><title>小灰</title></head><body><form name=”form1″ method=”post”><select id=”s1″ name=”s1″></select><select id=”s2″ name=”s2″></select><select id=”s3″ name=”s3″></select><select id=”s4″ name=”s4″></select></form><script language=”<a href="https://www.gaodaima.com/go.html?url=http://www.gaodaima.com/tag/javascript" title="JavaScript" rel="nofollow" target="_blank">JavaScript</a>“><!–function LianDong(arr, sel){ var me = this; this.$ = function(o) { return document.getElementById(o); } this.sub = function (i, pid) { for (var j=i+1; j<sel.length; j++) { me.$(sel[j]).length = 0; me.$(sel[j]).options[0] = new Option(“请选择”, “”); } for ( var j = 0; j < arr.length; j++) { if (arr[j][1] == pid) { me.$(sel[i+1]).options[me.$(sel[i+1]).length] = new Option(arr[j][2], arr[j][0]); } } } this.init = function() { me.sub(-1,”root”); for (var i=0; i<sel.length-1; i++) { me.$(sel[i]).onchange = function() { var i; for (i=0; me.$(sel[i])!=this; i++); me.sub(i, me.$(sel[i]).value); } } } this.init();}var array=new Array();array[0]=new Array(“华南地区”,”root”,”华南地区”);array[1]=new Array(“华北地区”,”root”,”华北地区”);array[2]=new Array(“上海”,”华南地区”,”上海”);array[3]=new Array(“广东”,”华南地区”,”广东”);array[4]=new Array(“徐家汇”,”上海”,”徐家汇”);array[5]=new Array(“普托”,”上海”,”普托”);array[6]=new Array(“广州”,”广东”,”广州”);array[7]=new Array(“湛江”,”广东”,”湛江”);array[8]=new Array(“湛江1″,”湛江”,”湛江1″);array[9]=new Array(“湛江2″,”湛江”,”湛江2″);array[10]=new Array(“广州1″,”广州”,”广州1″);array[11]=new Array(“广州2″,”广州”,”广州2″);var select = new Array(“s1″,”s2″,”s3″,”s4”);var liandong=new LianDong(array, select)//–></script></body></html>

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