我正在动态地向表中添加行。每行都有输入字段以及下拉字段。当我在下拉列表中选择“其他”时,我想禁用“注释”字段。如何查看动态添加的行的下拉框?
以下是我的代码。行插入工作正常,但我不知道如何检查下拉框的选定值。
<script language="javascript" type="text/javascript">
function addRow() {
var tbl = document.getElementById('tblSample');
var lastRow = tbl.rows.length;
var iteration = lastRow;
var row = tbl.insertRow(lastRow);
var cellLeft = row.insertCell(0);
var textNode = document.createTextNode(iteration-3);
cellLeft.appendChild(textNode);
var cellRightSel = row.insertCell(1);
var sel = document.createElement('select');
sel.name = 'LOCsel' + iteration;
sel.options[0] = new Option('---Any---', '0');
sel.options[1] = new Option('Level 0.5: Early Intervention', '1');
sel.options[2] = new Option('Level I: Outpatient', '2');
sel.options[3] = new Option('Level I.D: Outpatient-Detox', '3');
sel.options[4] = new Option('Level II.1: Intensive Outpatient', '4');
sel.options[5] = new Option('Level II.5: Partial Hospitalization', '5');
sel.options[6] = new Option('Level II.D: IOP-Detox', '6');
sel.options[7] = new Option('Level III.1: Halfway House', '7');
sel.options[8] = new Option('Level III.3: Long-Term Residential Care', '8');
sel.options[9] = new Option('Level III.5: Therapeutic Community', '9');
sel.options[10] = new Option('Level III.7: Medically Monitoried Inpatient(ICF)', '10');
sel.options[11] = new Option('Level III.7.D: Med.Mon.Inpatient(ICF)-Detox', '11');
sel.options[12] = new Option('Other', '12');
cellRightSel.appendChild(sel);
var cellRights = row.insertCell(2);
var els = document.createElement('input');
els.type = 'text';
els.name = 'Comments' + iteration;
els.id = 'Comments' + iteration;
els.size = 30;
cellRights.appendChild(els);
var cell8 = row.insertCell(9);
var element8 = document.createElement('input');
element8.type = 'text';
element8.name = 'txtRow'+ iteration;
element8.id = 'txtRow'+ iteration;
cell8.appendChild(element8);
element8.size = 20;
}
function validateLOC(){
var table = document.getElementById('tblSample');
var rowCount = table.rows.length;
for (var i=0; i < rowCount; i++) {
var loc = table.rows[i].cells[1].getElementById('LOCsel')[i];
var strUser = loc.options[loc.selectedIndex].text;
if (strUser = 'Other'){
document.getElementById('Comments').disabled = true;
document.getElementById('Comments').style.backgroundColor = '#cccccc';
rowCount--;
i;
}
else {
document.getElementById('Comments').disabled = false;
rowCount--;
i;
}
return true;
}
}
</script>
答案 0 :(得分:0)
首先添加选择框和id:
sel.id ='LOCsel'+迭代;
然后为每个选择框添加一个onclick事件处理程序:
sel.onclick = function(){
onLOCSelected(迭代);
};
然后添加此功能:
function onLOCSelected(uniqueID)
{
//使用uniqueID(你调用它的迭代)
//评估所选项目的价值&amp;相应地切换评论输入
}
希望有所帮助!