为什么我在extjs树编辑器中出现语法错误？

Question

为什么我会收到此错误

“SyntaxError：function语句需要名称”

代码中的代码

How to use ExtJS TreeEditor

Answer 1

这些行在上下文之外是无效的Javascript（它们应该用大括号括起来形成一个对象文字）。这是你问题中解析错误的来源：

onTreeNodeDblClick: function(n) {
    treeEditor.editNode = n;
    treeEditor.startEdit(n.ui.textNode);
}

onTreeEditComplete: function(treeEditor, o, n) {
    //o - oldValue
    //n - newValue
}

以下是解决问题的方法。请注意我的评论......一旦修复了第一个错误，你可能会遇到更多错误：

var tree = new Ext.tree.TreePanel({
    // The following function won't be defined, you'll have to configure
    // a working root to make this example work... And possibly more!
    root: this.getChildren(),
    height: 300,
    loader: new Ext.tree.TreeLoader(),
    useArrows: true,
    autoScroll: true,
    listeners: {
        dblclick: onTreeNodeDblClick
    }
});

var treeEditor = new Ext.tree.TreeEditor(tree, {}, {
    cancelOnEsc: true,
    completeOnEnter: true,
    selectOnFocus: true,
    allowBlank: false,
    listeners: {
        complete: onTreeEditComplete
    }
});

// It seems that the intention of the author was to declare independent 
// functions (as opposed to object methods).
function onTreeNodeDblClick(n) {
    treeEditor.editNode = n;
    treeEditor.startEdit(n.ui.textNode);
}

function onTreeEditComplete(treeEditor, o, n) {
    //o - oldValue
    //n - newValue
}