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多級聯動

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發布: 2016-09-02 08:42:18
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多級連動 直接把程式碼複製就可以運作 純前段 不帶後端和資料庫 底部附帶程式碼壓縮包
html PUBLIC 「-//W3C//DTD XHTML 1.0 Transitional//EN」 「http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd」><br> <br>     <br>         <meta> <br>         <title>JavaScript自訂多級連動下拉式選單</title> <br>         <script>var $ = function(id) {<br /> <br />                 返回「字串」== id 類型? document.getElementById(id) : id;<br /> <br />             };<br /> <br />             函數 addEventHandler(oTarget, sEventType, fnHandler) {<br /> <br />                 if (oTarget.addEventListener) {<br /> <br />                     oTarget.addEventListener(sEventType, fnHandler, false);<br /> <br />                 } else if (oTarget.attachEvent) {<br /> <br />                     oTarget.attachEvent("on" + sEventType, fnHandler);<br /> <br />                 } 所為另一個 {<br /> <br />                     oTarget["on" + sEventType] = fnHandler;<br /> <br />                 }<br /> <br />             };<br /> <br />             函數每個(arrList,有趣){<br /> <br />                 為(var i = 0,<br />                 len = arrList.length; 我< 倫; 我++) {<br />                     且有趣(arrList [i],i);<br />                 }<br /> <br />             };<br /> <br />             函數 GetOption(val, txt) {<br /> <br />                 var op = document.createElement("OPTION");<br /> <br />                 op.value = val;<br />                 op.innerHTML = txt;<br /> <br />                 返回作業;<br /> <br />             };<br /> <br />             var 類別 = {<br /> <br />                 已建立:函數(){<br /> <br />                     以連結函數(){<br /> <br />                         this.initialize.apply(this, 參數);<br /> <br />                     }<br /> <br />                }<br /> <br />             }<br /> <br />             Object.extend = 函數(目標,且來源){<br /> <br />                 for(源中的 var 屬性){<br /> <br />                     且為目的地[屬性] = 來源[屬性];<br /> <br />                 }<br /> <br />                 地返回目的地;<br /> <br />             }<br /> <br />             var CascadeSelect = Class.create();<br /> <br />             CascadeSelect.prototype = {<br /> <br />                 //選擇集合,且選單物件<br />                 初始化:函數(arrSelects、arrMenu、選項){<br /> <br />                     if (arrSelects.length <= 0 || arrMenu.lenght <= 0) return; //選單物件<br />|| arrMenu.lenght <= 0) return; //選單物件<br />|| <br />                     var oThis = this;<br /> <br />                     this.Selects = []; //選擇集合<br />                     this.Menu = arrMenu; //選單對象<br /> <br />                     this.SetOptions(選項);<br /> <br />                     this.Default = this.options.Default || [];<br /> <br />                     this.ShowEmpty = !!this.options.ShowEmpty;<br /> <br />                     this.EmptyText = this.options.EmptyText.toString();<br /> <br />                     //設定選擇以改變事件<br />                     且為每個(arr選擇,<br />                     函數(o,i){<br /> <br />                         addEventHandler((oThis.Selects[i] = $(o)), "改變",<br />                         函數(){<br />                             oThis.Set(i);<br />                         });<br /> <br />                     });<br /> <br />                     this.ReSet();<br /> <br />                 },<br /> <br />                 //設定預設屬性🎜                SetOptions: function(options) {<br /> <br />                     this.options = { //預設值<br />                         Default: [],<br />                         //預設值(依序)<br />                         ShowEmpty: false,<br />                         //是否顯示空格(位於第一個)<br />                         EmptyText: "請選擇" //空值顯示文字(ShowEmpty為true時有效)<br />                     };<br /> <br />                     Object.extend(this.options, options || {});<br /> <br />                 },<br /> <br />                 //初始化select<br />                 ReSet: function() {<br /> <br />                     this.SetSelect(this.Selects[0], this.Menu, this.Default.shift());<br /> <br />                     this.Set(0);<br /> <br />                 },<br /> <br />                 //全部select設定<br />                 Set: function(index) {<br /> <br />                     var menu = this.Menu<br /> <br />                     //先使用且非處理於1開始<br />                     for (var i = 1,<br />                     len = this.Selects.length; i < len; i++) {<br /> <br />                         if (menu.length > 0) {<br /> <br />                             //使用選單<br />                             var value = this.Selects[i  1].valuevar value = this.Selects[i  1].valueue; <br />                             if (value != "") {<br /> <br />                                 Each(menu,<br />                                 function(o) {<br />                                                                                                                                             }));<br /> <br />                             } else {<br />                                 menu = [];<br />                             }<br /> <br />                             ///設定選單<br />                             if (i > index) {<br />                                 this.SetSelect(this.Selects[i],      this.SetSelect(this.Selects[i],                              }<br /> <br />                         } else {<br /> <br />                             //使用資料<br />                             this.SetSelect(this.Selects[i], [], "");<br /> <br />                         }<br /> <br />                     }<br /> <br />                     //已清除預設值<br />                     this.Default.length = 0;<br /> <br />                 },<br /> <br />                 //select設定<br />                 SetSelect: function(oSel, menu, value) {<br /> <br />                     oSel.options.length = 0;<br />                     oSel.disabled = false;<br /> <br />                     if (this.ShowEmpty) {<br />                         oSel.appendChild(GetOption("", this.EmptyText));<br />Child(GetOption("", this.EmptyText));<br />Child(GetOption("", this.EmptyText));<br />Child(GetOption("", this.EmptyText));<br />Child(GetOption("", this.EmptyText));                     }<br /> <br />                     if (menu.length <= 0) {<br />                         oSel.disabled = true;<br />                        且有回報;<br />                     }<br /> <br />                     且為每個(選單,且<br />                     函數(o){<br /> <br />                         var op = GetOption(o.val, o.txt?o.txt: o.val);<br />                         op.selected=(值==op.value);<br /> <br />                         oSel.appendChild(op);<br /> <br />                     });<br /> <br />                 },<br /> <br />                 //新增選單<br />                 新增:功能(選單){<br /> <br />                     this.Menu[this.Menu.length] = 選單;<br /> <br />                     this.ReSet();<br /> <br />                 },<br /> <br />                 //移除選單<br />                 刪除:函數(指標){<br /> <br />                     if (index < 0 || index >= this.Menu.length) return;<br /> <br />                     以(var i =索引,<br />                     len = this.Menu.length - 1; 我< 倫; 我++) {<br />                         this.Menu[i] = this.Menu[i + 1];<br />                     }<br /> <br />                     this.Menu.pop()<br /> <br />                     this.ReSet();<br /> <br />                 }<br /> <br />             };<br /> <br />             window.onload = function() {<br /> <br />                 var選單=[<br /> <br />                 {<br />                     'val': '1',<br />                     'txt』: '值'<br />                 },<br /> <br />                 {<br />                     'val': '2 ->',<br />                    「以選單」:[<br /> <br />                     {<br />                         「val」:「2_1」<br />                     },<br /> <br />                     {<br />                         'val': '2_2'<br />                     }<br /> <br />                     】<br />                 },<br /> <br />                 {<br />                     'val': '3 ->',<br />                     「以選單」:[<br /> <br />                     {<br />                         'val': '3_1 ->',<br />                         「以選單」中:[<br /> <br />                         {<br />                             「val」:「3_1_1」<br />                         },<br /> <br />                         {<br />                             「val」:「3_1_2」<br />                         }<br /> <br />                         】<br />                     },<br /> <br />                     {<br />                         'val': '3_2'<br />                     }<br /> <br />                     】<br />                 },<br /> <br />                 {<br />                     'val': '4 ->',<br />                     「以選單」:[<br /> <br />                     {<br />                        'val': '4_1 ->',<br />                         「以選單」中:[<br /> <br />                         {<br />                             'val': '4_1_1 ->',<br />                             「選單」中:[<br /> <br />                             {<br />                                 』val': '4_1_1_1'<br />                             }<br /> <br />                             】<br />                         }<br /> <br />                         】<br />                     }<br /> <br />                     】<br />                 }<br /> <br />                 ];<br /> <br />                 var sel = ["sel1", "sel2", "sel3", "sel4", "sel5"];<br /> <br />                 var val = ["3->","3_1->","3_1_2"];<br /> <br />                 var cs = new CascadeSelect(sel, 選單, {<br />                     預設值:val<br />                 });<br /> <br />                 $("btnA").onclick = function() {<br />                     cs.ShowEmpty = !cs.ShowEmpty;<br />                 }<br /> <br />                 $("btnB").onclick = function() {<br /> <br />                     cs.Add(<br /> <br />                     {<br />                         'val': '5 ->',<br />                         「以選單」中:[<br /> <br />                         {<br />                            'val': '5_1 ->',<br />                             「選單」中:[<br /> <br />                             {<br />                                 ,                                 「且選單」中[<br /> <br />                                 {<br />                                  地                                  地 <br />                                  地                                  地                                  地 <br />                                  地                                 }<br /> <br />                                 】<br />                             }<br /> <br />                             】<br />                         }<br /> <br />                         】<br />                     }<br /> <br />                     )<br /> <br />                 }<br /> <br />                 $("btnC").onclick = function() {<br /> <br />                     cs。刪除(3)<br /> <br />                 }<br /> <br />             }</用者><br />         <style type="text/css">.sel select{ width:100px;}<br />    <身體><br />         <div class="sel"><br />             <選擇 id="sel1"></選擇><br />             <選擇id=「sel2」></選擇><br />             <選擇 id="sel3"></選擇><br />             <選擇 id="sel4"></選擇><br />             <選擇 id="sel5"></選擇><br />         <br />         <br /><br />         <div><br />             <input id="btnA" type="button" value="顯示/不顯示空值" /><br />             <input id="btnB" type="button" value="新增選單" /><br />             <input id="btnC" type="button" value="減少選單" /><br />     </身體><br /> </script>

來源:php.cn
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