[英]OnSelect handler with XUL and Javascript
So I have a tree of items created using XUL. 因此,我有一棵使用XUL创建的项目树。 When I select item from this tree and click a View button I want to display information about the selected item.
当我从该树中选择项目并单击“查看”按钮时,我要显示有关所选项目的信息。 I do it as below but the button does not work at all.
我按以下方式进行操作,但是该按钮根本不起作用。
Assign an id for the tree: 为树分配一个ID:
<tree id="assetList" flex="1" multiple="false">
Then I attach a function to the button: 然后我将一个函数附加到按钮:
<button id="view-button" align="right" class="dialog" label="View" oncommand="view()" />
Then I have function view written as bellow: 然后我将函数视图写为波纹管:
function view(){
var tree = document.getElementById("assetList");
var items = tree.selectedItems;
if(items.length == 0)
alert("No item was selected");
else if(items.length > 1)
alert("Please select one item at a time");
else{
txt = items.getAttribute('id'); //it's just for testing right now
alert(txt);
}
}
Even when I don't select anything and click view the alert message is not fired. 即使我没有选择任何内容并单击查看,警报消息也不会触发。 What did I do wrong?
我做错了什么? and How can I fix it?
以及如何解决?
Thanks 谢谢
I figured out how to do this. 我想出了怎么做。 I can use getItemAtIndex(tree.currentIndex).
我可以使用getItemAtIndex(tree.currentIndex)。
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