对Extjs来说完全陌生。我要求在Extjs树中允许多选。下面的代码是做单选。我需要更改代码，使其在选定的ID之间使用分号进行多选。任何人都可以根据要求更改代码。此外，如果您可以告诉我将树的选定值写入哪个字段或变量。提前致谢
Ext.onReady(function() {
Ext.QuickTips.init();
var str='';
var switch_flag = '';
var approvals = '';
var active_mode = '';
var json = null;
Ext.Ajax.request({
url: 'Dmscategorytree/ajax/Message',
method: 'POST',
params:{
lifecycle_id: str,
switch_flag: switch_flag,
approvals: approvals,
active_mode: active_mode
},
success: function(response, options) {
var path='';
var id='';
var text='';
json=response.responseText;
alert(json);
json = json.replace(/"/g,'\"');
json=Ext.util.JSON.decode(json);
var flag=true;
var myloader = new Ext.tree.TreeLoader();
myloader.load = function(node, cb,scope) {
if(this.clearOnLoad){
while(node.firstChild){
node.removeChild(node.firstChild);
}
}
if(this.doPreload(node)){
this.runCallback(cb, scope || node, [node]);
}
cb();
}
var tree = new Ext.tree.TreePanel({
animate:true,
autoScroll:true,
//loader: new Tree.TreeLoader({dataUrl:'get-nodes.php'}),
containerScroll: true,
border: false,
loader:myloader,
rootVisible: false,
listeners:{
checkchange:function(node){
if(flag){
toggleCheck(tree.root,false,node.id);
path=node.attributes.value;
id=node.attributes.ID;
text=node.attributes.text;
path=path.replace(/\^/g,'/');
}
}
}
});
function SelectToParent()
{
try
{
parent.window.opener.callParent(path,id);
parent.window.opener.focus();
parent.window.close();
}
catch(e){
alert('got exception');
window.close();
}
}
function toggleCheck(node,isCheck,nodeId)
{
flag=false;
if(node)
{
var args=[isCheck];
node.cascade(function(){
c=args[0];
if(nodeId!=this.id){
this.ui.toggleCheck(c);
this.attributes.checked=c;
}
},null,args);
}
flag=true;
return true;
}
var root = new Ext.tree.AsyncTreeNode({
text: 'Ext JS',
draggable:false, // disable root node dragging
id:'src',
children: json
});
tree.setRootNode(root);
var topbar = new Ext.Toolbar({
region : 'north',
height:30,
margins: '0 0 0 5',
items:[
{
xtype: 'box',
id: 'title',
autoEl: {
html: '@label.chooseCat@'
}
,width:525
},
{
text: '@label.Done@',
id: 'doneBtn',
tooltip: 'Done',
handler: SelectToParent
}
]
});
topbar.render('tree');
tree.render('tree');
tree.getRootNode().expand();
}
});
});