markdown JavaScript中的树节点

Posted 2021-05-06

# Tree Node in JavaScript
## Implementation
```javascript
const TreeNode = val => {
    let value = val
    let children = []
    const getValue = () => value
    const getChildren = () => children
    const setValue = newVal => {value = newVal}
    const addChild = childNode => {children.push(childNode)}
    return {getValue, getChildren, setValue, addChild}
}
export default TreeNode
```
# Examples
```javascript
const myTreeNode = TreeNode(3)
myTreeNode.getValue() // 3
myTreeNode.setValue(5)
myTreeNode.getValue() // 5
myTreeNode.addChild(TreeNode(9))
myTreeNode.getChildren()[0].getValue() // 0
```