摘要： refer to: https://www.algoexpert.io/questions/BST%20Traversal && leetcode &&力扣 分别使用前序遍历中序遍历后序遍历的方法遍历搜索二叉树 1 import java.util.*; 2 3 class Program { 4 阅读全文

摘要： display: inline-block, block; document.querySelector; document.createElement; .classList.add; .innerText /.src; label.innerText = `#${i}`; newImg.src = `${baseURL}${i}.png`; appendChild 阅读全文

摘要： querySelector, querySelectorAll; innerHTML, textContent/innerText/src; .style.width to change style; getAttribute/ setAttribute/ .classList/ .classList.add() / .classList.remove() /classList.contains() / classList.toggle(); traversing parent/child/sibling; Append& AppendChild(create DOM element and append it into page); remove/removeChild 阅读全文