测试点击速度

脚本说明:
第一步:把如下代码加入＜head＞区域中
＜SCRIPT?LANGUAGE="JavaScript"＞
＜!--?Original:??Tomer?Shiran

＜!--?This?script?and?many?more?are?available?free?online?at?--＞
＜!--?The?JavaScript?Source!!?http://javascript.internet.com?--＞

＜!--?Begin
var?total?=?0
var?play?=?false
function?display(element)?{
var?now?=?new?Date()
if?(!play)?{
play?=?true
startTime?=?now.getTime()}
if?(now.getTime()?-?startTime?＞?20000)?{
element.checked?=?!element.checked
return
}
?if?(element.checked)
total++
else
total--
element.form.num.value?=?total
}
function?restart(form)?{
total?=?0
play?=?false
for?(var?i?=?1;?i?＜=?100;?++i)?{
?form.elements[i].checked?=?false
???}
}
//?End?--＞
＜/SCRIPT＞

第二步:把如下代码加入＜body＞区
＜CENTER＞Test?your?skill.??How?many?boxes?can?
you?check?in?20?seconds?＜/CENTER＞
＜SCRIPT?LANGUAGE="JavaScript"＞
＜!--?Begin
document.write("＜FORM＞＜CENTER＞")
document.write('＜INPUT?TYPE="text"?VALUE="0"?');
document.write('NAME="num"?SIZE=10?onFocus="this.blur()"＞＜BR＞')
document.write("＜HR?SIZE=1?WIDTH=40%＞")
for?(var?i?=?0;?i?＜?10;?++i)?{
for?(var?j?=?0;?j?＜?10;?++j)?{
document.write('＜INPUT?TYPE="checkbox"?');
document.write('onClick="display(this)"＞')}
document.write("＜BR＞")}
document.write("＜HR?SIZE=1?WIDTH=40%＞")
document.write('＜INPUT?TYPE="button"?VALUE="restart"?');
document.write('onClick="restart(this.form)"＞')
document.write("＜/CENTER＞＜/FORM＞")
//?End?--＞
＜/SCRIPT＞