一些实用的JavaScript代码

一、解除复制限制

javascript:with(document.body){oncontextmenu='';ondragstart='';onselectstart='';onselect='';oncopy='';onbeforecopy='';onmouseup='';}void(0);

二.解除网页中的一些禁止功能如复制/粘贴，右键等

javascript<img src="static/image/smiley/default/sad.gif" border="0" smilieid="2" alt=":(">function(e,f,w,d,b,i){for(i=0;i<e.length;)(t=e[i++],w[t]=d[t]=b[t]=f);})(['onmousedown','onmouseup','onmousemove','ondblclick','onclick','oncontextmenu','onmousewheel','onselectstart','oncopy','onkeydown','onkeypress','onkeyup'],new Function,window,document,document.body);

三、页面可编辑

javascript:document.body.contentEditable='true'; document.designMode='on'; void 0

五、不显示图片

javascript:for(jK6bvW=0;jK6bvW<document.images.length;jK6bvW++){void(document.images[jK6bvW].style.visibility='hidden')}

八、屏幕晃动

javascript:function flood(n) {if (self.moveBy) {for (i = 200; i > 0;i--){for (j = n; j > 0; j--) {self.moveBy(1,i); self.moveBy(i,0);self.moveBy(0,-i); self.moveBy(-i,0); } } }}flood(6);{ var inp = "D-X !msagro na dah tsuj resworb rouY"; var outp = ""; for (i = 0; i <= inp.length; i++) {outp =inp.charAt (i) + outp ; } alert(outp) ;}; reverse

九、页面所有图片旋转

javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI=document.images; DIL=DI.length; function A(){for(i=0; i-DIL; i++){DIS=DI[ i ].style; DIS.position='absolute';DIS.left=Math.cos(R*x1+i*x2+x3)*x4+x5; DIS.top=Math.sin(R*y1+i*y2+y3)*y4+y5}R++}setInterval('A()',5); void(0);

十、改变背景色。如改成蓝色

javascript:void(document.bgColor="blue")

十一、辨别是否为欺骗性网站

javascript:alert("The actual url is:		" + location.protocol + "//" + location.hostname + "/" + "
The address URL is:		" + location.href + "
" + "
If the server names do not match, this may be a spoof.");

十二、网页射击游戏

javascript:var%20s%20=%20document.createElement('script');s.type='text/javascript';document.body.appendChild(s);s.src='http://erkie.github.com/asteroids.min.js';void(0);

十三、密码框密文变明文

javascript:(function(){var s,F,j,f,i;s="";F=document.forms;for(j=0;j<F.length;++j){f=F[j];for(i=0;i<f.length;++i){if(f[i].type.toLowerCase()=="password")s+=f[i].value+"
";}}if(s)alert("Passwords in forms on this page:

"+s);else alert("There are no passwords in forms on this page.");})();

十四、显示当前网页的COOKIE

javascript:alert(document.cookie)

十五、快速查看网站更新时间

javascript:alert(document.lastModified)