下拉框假联动

本文详细介绍了如何使用JavaScript实现下拉框之间的联动功能,包括文本与下拉框联动、下拉框与下拉框联动及移动开发场景中的联动应用。

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<SCRIPT LANGUAGE="JavaScript" SRC=<select:link page="/js/selectLinkOnchange.js"/> ></script>
<td  class="TableData">
申请呼叫项目:
<select:select property="option" styleClass="IptStyle" style="width:130" onchange="selectLinkOnchange('option','value','optionSub','value1');">
<select:option value="-1">--请选择--</select:option>
<select:options collection="option1List" property="id" labelProperty="name" value1="value1"/>
</select:select>
-
<select:select property="optionSub" styleClass="IptStyle" style="width:120">
<select:option value="-1">--请选择--</select:option>
<select:options collection="option2List" property="id" labelProperty="name" value1="value1"/>
</select:select>
</td>
js源代码:
//下拉框与下拉框联动
function selectLinkOnchange(masterObjStr,masterField,detailObjStr,detailField) {
var masterObj = document.getElementById(masterObjStr);
var detailObj = document.getElementById(detailObjStr);
        if(detailObj=="[object]"&&masterObj=="[object]"){

if(typeof(detailObj.OUTERHTML) == "undefined"){
detailObj.OUTERHTML = detailObj.outerHTML;
}

var str= detailObj.OUTERHTML

detailObj.outerHTML = str;

detailObj = document.getElementById(detailObjStr);
if(typeof(detailObj.OUTERHTML)=="undefined"){
detailObj.OUTERHTML = detailObj.outerHTML;
}

if(masterObj.selectedIndex < 0 || masterObj.options[masterObj.selectedIndex].getAttribute(masterField)==''){//选中全部则显示所有的
return ;
}


var masterValue = parseInt(masterObj.options[masterObj.selectedIndex].getAttribute(masterField));
if (masterValue < 0) {
return ;
}

  for(var i=0;i<detailObj.options.length;i++){
var detailValue = parseInt(detailObj.options[i].getAttribute(detailField));
/*if(detailValue == 1){
detailValue = 3A;
}
if(detailValue == 0){
detailValue = 3B;
}*/
    if((masterValue != detailValue) && isNaN(detailObj.options[i].value)) {
      detailObj.remove(i);
      i--;
    }
else if((masterValue != detailValue) && parseInt(detailObj.options[i].value) >= 0) {
detailObj.remove(i);
i--;
}
}
        }
return;
}

//文本与下拉框联动
function textLinkOnchange(masterObjStr,detailObjStr,detailField) {
var masterObj = document.getElementById(masterObjStr);
var detailObj = document.getElementById(detailObjStr);
        if(detailObj=="[object]"&&masterObj=="[object]"){
if(typeof(detailObj.OUTERHTML) == "undefined"){
detailObj.OUTERHTML = detailObj.outerHTML;
}

var str= detailObj.OUTERHTML

detailObj.outerHTML = str;

detailObj = document.getElementById(detailObjStr);
if(typeof(detailObj.OUTERHTML)=="undefined"){
detailObj.OUTERHTML = detailObj.outerHTML;
}

if(masterObj.value == "" ){//选中全部则显示所有的
return ;
}

var masterValue = parseInt(masterObj.value);
if (masterValue <= 0 || isNaN(masterValue)) {
return ;
}

for(var i=0;i<detailObj.options.length;i++){
var detailValue = parseInt(detailObj.options[i].getAttribute(detailField));
if((masterValue != detailValue) && parseInt(detailObj.options[i].value) > 0) {
detailObj.remove(i);
i--;
}
}
        }
return;
}

function MoveinoroutLinkDepart(masterObjStr,masterField,detailObjStr,detailField){
var masterObj = document.getElementById(masterObjStr);
var detailObj = document.getElementById(detailObjStr);

if(typeof(detailObj.OUTERHTML) == "undefined"){
detailObj.OUTERHTML = detailObj.outerHTML;
}

var str= detailObj.OUTERHTML

detailObj.outerHTML = str;

detailObj = document.getElementById(detailObjStr);
if(typeof(detailObj.OUTERHTML)=="undefined"){
detailObj.OUTERHTML = detailObj.outerHTML;
}

if(masterObj.selectedIndex < 0 ){//选中全部则显示所有的
return ;
}


var masterValue = masterObj.options[masterObj.selectedIndex].getAttribute(masterField);
if (masterValue == "3A") {
masterValue = parseInt(1);
}
if (masterValue == "3B") {
masterValue = parseInt(0);
}

for(var i=0;i<detailObj.options.length;i++){
var detailValue = parseInt(detailObj.options[i].getAttribute(detailField));
if((masterValue != detailValue) && parseInt(detailObj.options[i].value) > 0) {
detailObj.remove(i);
i--;
}
}

return;
}
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