【发布时间】:2011-09-27 08:14:38
【问题描述】:
我正在尝试将控件的 id 传递给一个 javascript 函数,该函数将它的值(控件是一个文本框)添加到一个列表框,但显然我没有做对,有人可以纠正我。
谢谢。
<input type="button" ID="btnAddtoLstBox" value="" title="Add this to the list" onclick="javascript:addToList(document.getElementById(btnAddtoLstBox));"
class="ui-icon ui-icon-refresh ui-corner-all" style="width: 20px; height: 20px; background-position: -64px 80px" />
// scripts to add list items
function addToList(varTxtBox) {
// get the list box
var lb = document.getElementById("uilstMemTypeTier");
// get the text to add
var toAdd = varTxtBox.value;
if (toAdd == "") return false;
// look for the delimiter string. if found, alert and do nothing
if (toAdd.indexOf(delim) != -1) {
alert("The value to add to the list cannot contain the text \"" + delim + "\" as it is used as the delimiter string.");
return false;
}
// check if the value is already in the list box
for (i = 0; i < lb.length; i++) {
if (toAdd == lb.options[i].value) {
alert("The text you tried to add is already in the list box.");
return false;
}
}
// add it to the hidden field
document.getElementById("<%=uihdnlistBasedFieldsListItems.ClientID%>").value += toAdd + delim;
// create an option and add it to the end of the listbox
lb.options[lb.length] = new Option(toAdd, toAdd);
// clear the textfield and focus it
varTxtBox.value = "";
varTxtBox.focus();
}
【问题讨论】:
-
您遇到错误了吗?哪个位不工作?
-
另外,
delim变量是否在封闭范围内并已定义?
标签: javascript asp.net vb.net