摘要：
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <script> //window.onload=function(){｝的作用是在页面全部加载完毕后加载script window.onload=function 阅读全文
摘要：
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <script> window.onload=function(){ var oIput1=document.getElementById('put1'); var 阅读全文