脚本说明: 把如下代码加入<body>区域中 <SCRIPT LANGUAGE="JavaScript"> <!-- Begin //how much time they get var time=45; var timesup=0; var started=0; function CountDown() { if(time>0) {document.math.timer.value=time; time=time-1; var gameTimer=setTimeout("CountDown()", 1000)} else if (time==0) {document.math.timer.value="0"; timesup=1; alert('Time\'s Up!'); document.math.firstnum.value=""; document.math.operator.value=""; document.math.secondnum.value=""; document.math.answer.value=""; } } <!--END OF TIMER SCRIPT--> function startgame() {if (started!=0) {alert('你已经开始了');} else { started=1; CountDown(); getProb(); } } <!--START OF RANDOM NUMBER SCRIPT--> function randnum(min,max) { var num=Math.round(Math.random()*(max-min))+min; return num; } <!--END OF RANDOM NUMBER SCRIPT--> var choose, rightanswer function getProb() { choose=randnum(1,4); if (choose=="1") {document.math.operator.value="+"; var choose1=randnum(0,50); var choose2=randnum(0,50); document.math.firstnum.value=choose1; document.math.secondnum.value=choose2; rightanswer=choose1 + choose2; } if (choose=="2") {document.math.operator.value="-"; var choose2=randnum(0,50); var choose1=randnum(choose2,50); document.math.firstnum.value=choose1; document.math.secondnum.value=choose2; rightanswer=choose1 - choose2; } if (choose=="3") {document.math.operator.value="x"; var choose1=randnum(0,10); var choose2=randnum(0,10); document.math.firstnum.value=choose1; document.math.secondnum.value=choose2; rightanswer=choose1 * choose2; } if (choose=="4") {document.math.operator.value="/"; var choose2=randnum(1,10); var choose1=choose2 * randnum(0,10); document.math.firstnum.value=choose1; document.math.secondnum.value=choose2; rightanswer=choose1 / choose2; } } function answerit() { if (started==0) {alert('你必须先点击开始');} else { if (timesup!=0) {alert('你超时!');} else { var theiranswer=eval(document.math.answer.value); var theirpoints=eval(document.math.points.value); if (theiranswer==null) {alert('请在正确的地方输入答案'); document.math.answer.select();} else { if (theiranswer==rightanswer) { alert('正确'); theirpoints++; document.math.points.value=theirpoints; } else {alert(theiranswer + " 错了!\n\n"+rightanswer + " 是正确的答案!")} document.math.answer.select(); getProb(); } } } } // End --> </script> <table align="left"> <tr> <td colspan="3" align="center"><input type="button" value="新游戏" onClick="location.reload();"></td></tr><tr> <td colspan="3" align="center"><input type="button" value="开始" size="5" onClick="startgame()"></td> </tr> <tr> <form name="math"> <td colspan="3" align="center"><font face="Arial, Helvetica, Sans Serif" size="3" color="#0000FF"><b>剩余时间:</b> <input type="text" name="timer" size="5"></td> </tr> <tr> <td align="right"><font face="Arial, Helvetica, Sans Serif" size="3" color="#0000FF"><b>题目:</b> <input type="text" name="firstnum" size="5"></td> <td align="center"><input type="text" name="operator" size="2"></td> <td align="left"><input type="text" name="secondnum" size="5"></td> </tr> <tr> <td colspan="3" align="center"><hr><font face="Arial, Helvetica, Sans Serif" size="3" color="#0000FF"><b>在这里写答案:</b> <input type="text" name="answer" size="5"> <input type="button" value="提交答案" onClick="answerit();"><hr></td> </tr> <tr> <td colspan="3" align="center"><font face="Arial, Helvetica, Sans Serif" size="3" color="#0000FF"><b>得分:</b> <input type="text" name="points" size="5" value="0"></td> </tr> <tr> </form> </tr> </table> <a href="http://www.jzq8.com/">欢迎访问建站吧代码特效频道，www.jzq8.com</a> 建站吧提示：可修改后代码再运行!
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建站吧网页特效代码——JS百分比及饼形图[详细]
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