摘要：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <script> var arr = ["huchangxi",23,true] console.log(arr.length) // 阅读全文
摘要：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <script> // 条件循环 遍历循环 // while for // 无限循环 /*while (true){ console.l 阅读全文