[英]JavaScript - Binary Search Tree - inOrderTraverse() function log “undefined” to console window?
I'm implementing an AVL Tree using JavaScript, and I'm currently working with the inOrderTraverse() function. 我正在使用JavaScript实现AVL树,并且目前正在使用inOrderTraverse()函数。 The problem is that: when i want to log the values of the nodes to the console window, it shows "undefined" instead.
问题是:当我要将节点的值记录到控制台窗口时,它显示为“未定义”。
I've referenced from https://gist.github.com/TheIronDeveloper/6604713 and i think there's not much difference between my code and the code i've referenced from. 我已经从https://gist.github.com/TheIronDeveloper/6604713引用了,我认为我的代码和我从中引用的代码之间并没有太大区别。
Here is my JS code for implementing AVL Tree: http://jsfiddle.net/nrU4T/ or https://dl.dropboxusercontent.com/u/178536659/avl%20tree%20javascript/avlTree.js 这是我用于实现AVL树的JS代码: http : //jsfiddle.net/nrU4T/或https://dl.dropboxusercontent.com/u/178536659/avl%20tree%20javascript/avlTree.js
The result i got is here: (i run this code on Chrome) 我得到的结果是在这里:(我在Chrome上运行此代码)
Node 12 added. avlTree.js:205
Nodes count = 1 avlTree.js:206
undefined avlTree.js:64
avlTree.js:68
Node 18 added. avlTree.js:264
Nodes count = 2 avlTree.js:265
undefined avlTree.js:64
undefined avlTree.js:64
avlTree.js:68
avlTree.js:68
Node 20 added. avlTree.js:264
Nodes count = 3 avlTree.js:265
undefined avlTree.js:64
undefined avlTree.js:64
undefined avlTree.js:64
Please help me to fix this error ... Any comments would be very appreciated. 请帮助我解决此错误...任何评论将不胜感激。 Thank you guys a lot.
非常感谢你们。
Its your bug: 它是你的错误:
in function inOrderTraverse()
you have to print this.data
and not this.value
. 在
inOrderTraverse()
函数中,您必须打印this.data
而不是this.value
。
inOrderTraverse: function() {
if(this.left !== null) {
this.left.inOrderTraverse();
}
console.log(this.data); // <-- here - not this.value
if(this.right !== null) {
this.right.inOrderTraverse();
}
console.log("\n");
}
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