摘要:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body> <script> //方式一// var re_obj=new RegExp("\d+","g"); //执行 阅读全文
摘要:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body> <script> alert(Math.random())//(0,1) 返回 0 ~ 1 之间的随机数。 a 阅读全文
摘要:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body> <script> var s="hello"; var i=8;// typeof 只能判断基本数据类型; a 阅读全文