2、在 js 方法中，判断复选框当前值
2.1、如果选中，将关联的复选框也选中
2.2、如果没有选中，将关联的复选框取消选中
<select ng-model="selectedDistrict" ng-change="selectedUnit=''" ng-options="district.name for district in districts" class="ng-valid ng-dirty"></select><select ng-model="selectedUnit" ng-change="selectedPosition=''" ng-options="unit.name for unit in selectedDistrict.units" class="ng-valid ng-dirty"></select>
这个是两级联动。如果要多选，建议你用插件isteven-multi-select。
<form method="post" name="myform"><select name="classid" onchange="select()"></select>
<select name="suid"></select>
<select name="gid"></select>
</form>
<script language="javascript">
<!--
var arrText = new Array(5)
var arrValue = new Array(arrText.length)
function objSetOption(select1, select2, select3) {
this.select1 = select1
this.select2 = select2
this.select3 = select3
}
arrText[0]= new objSetOption("nokia", "63300:,3210:", "blue:,red:")
arrText[1] = new objSetOption("论文:1", "语文:1,数学:2,英语:3", "初中:2,高中:3")
arrText[2] = new objSetOption("例题:2", "显示b2_1:值b2_1,显示b2_2:值b2_2", "显示b3_1:值b3_1,显示b3_2:值b3_2")
arrText[3] = new objSetOption("显示c:值c", "显示c2_1:值c2_1,显示c2_2:值c2_2", "显示c3_1:值c3_1,显示c3_2:值c3_2")
arrText[4] = new objSetOption("显示d:值d", "显示d2_1:值d2_1,显示d2_2:值d2_2", "显示d3_1:值d3_1,显示d3_2:值d3_2")
arrText[5] = new objSetOption("显示e:值e", "显示e2_1:值e2_1,显示e2_2:值e2_2", "显示e3_1:值e3_1,显示e3_2:值e3_2")
function select(sValue1, sValue2, sValue3) {
var eltSelect1 = document.myform.classid
var eltSelect2 = document.myform.suid
var eltSelect3 = document.myform.gid
var arrSelect1, arrSelect2, arrSelect3
var arrData1, arrData2, arrData3
with(eltSelect1) {
var strSelect = options[selectedIndex].value
}
for(i = 0i <arrText.lengthi ++) {
arrSelect1 = arrText[i].select1
arrData1 = arrSelect1.split(":")
if (arrData1[1] == strSelect) {
arrSelect2 = (arrText[i].select2).split(",")
for(j = 0j <arrSelect2.lengthj++) {
arrData2 = arrSelect2[j].split(":")
with(eltSelect2) {
length = arrSelect2.length
options[j].text = arrData2[0]
options[j].value = arrData2[1]
if (arrData2[1] == sValue2) {
options[j].selected = true
}
}
}
arrSelect3 = (arrText[i].select3).split(",")
for(j = 0j <arrSelect3.lengthj++) {
arrData3 = arrSelect3[j].split(":")
with(eltSelect3) {
length = arrSelect3.length
options[j].text = arrData3[0]
options[j].value = arrData3[1]
if (arrData3[1] == sValue3) {
options[j].selected = true
}
}
}
break
}
}
}
function init(sValue1, sValue2, sValue3) {
var eltSelect1 = document.myform.classid
var eltSelect2 = document.myform.suid
var eltSelect3 = document.myform.gid
var arrSelect1, arrSelect2, arrSelect3
var arrData1, arrData2, arrData3
if (eltSelect1 != undefined &&eltSelect2 != undefined &&eltSelect3 != undefined) {
with(eltSelect2) {
arrSelect2 = (arrText[0].select2).split(",")
length = arrSelect2.length
for(i = 0i <lengthi ++) {
arrData2 = arrSelect2[i].split(":")
options[i].text = arrData2[0]
options[i].value = arrData2[1]
}
}
with(eltSelect3) {
arrSelect3 = (arrText[0].select3).split(",")
length = arrSelect3.length
for(i = 0i <lengthi ++) {
arrData3 = arrSelect3[i].split(":")
options[i].text = arrData3[0]
options[i].value = arrData3[1]
}
}
with(eltSelect1) {
length = arrText.length
for(i = 0i <arrText.lengthi ++) {
arrSelect1 = arrText[i].select1
arrData1 = arrSelect1.split(":")
options[i].text = arrData1[0]
options[i].value = arrData1[1]
if (arrData1[1] == sValue1) {
options[i].selected = true
select("", sValue2, sValue3)
}
}
}
}
}
//init()
//默认初始化
init("2", "值b2_1", "值b3_2")
//更改后默认初始化
// -->
</script>
如果要用到数据库，要用到Ajax。也不会很难
