加减乘除的运算测试
要完成此效果需要两个步骤
第一步：把如下代码加入到<head>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
correct=0;
wrong=0;
function random(maxValue) {
day= new Date();
hour= day.getHours();
min=day.getMinutes();
sec=day.getSeconds();
mili=day.getTime()
return(((hour*3600)+(min*60)+(sec)+mili) % maxValue);
}
function ranom(maxValue) {
day= new Date();
mil=day.getTime();
return((mil) % maxValue);
}
function add() {
if(document.quizform.arithmetic[0].checked)
maxValue=10;
else {
if(document.quizform.arithmetic[1].checked)
maxValue=30;
else {
maxValue=60;
}
}
numA=random(maxValue);
numB=ranom(maxValue);
numC=numA + numB;
Answer=window.prompt( numA + "+" + numB + " = ", "");
ans();
}
function subtract() {
if(document.quizform.arithmetic[0].checked)
maxValue=10;
else
{if(document.quizform.arithmetic[1].checked)
maxValue=30;
else {
maxValue=60
}
}
numA=random(maxValue);
numB=ranom(maxValue);
numC=numA - numB;
Answer=window.prompt( numA + "-" + numB+ " = ", 0);
ans()
}
function divide() {
if(document.quizform.arithmetic[0].checked)
maxValue=10;
else {
if(document.quizform.arithmetic[1].checked)
maxValue=30;
else {
maxValue=60
}
}
numA=random(maxValue)+1;
numB=ranom(maxValue)+1;
numC=numA / numB;
numC=Math.round(numC)
window.alert("Please round your answer off:\n"
+".5 or higher rounds one number up\n"
+".4 or lower rounds one number down");
Answer=window.prompt( numA + "/" + numB + " = ", 0);
ans()
}
function multiply() {
if(document.quizform.arithmetic[0].checked)
maxValue=10;
else {
if(document.quizform.arithmetic[1].checked)
maxValue=30;
else {
maxValue=60
}
}
numA=random(maxValue);
numB=ranom(maxValue);
numC=numA * numB;
Answer=window.prompt( numA + "*" + numB + " = ", 0);
ans();
}
function check() {
if ((correct+wrong) != 0) {
score = "" + ((correct / (correct + wrong)) * 100);
score = score.substring(0,4) + "%";
alert("你的答题正确率是: " + score + "\n"
+ correct + " 次答对\n"
+ wrong + " 次答错")
}
else alert("你还未完成任一习题.");
}
function ans() {
if (Answer == numC) {
correct++;
msg = "恭喜, 你回答正确.";
}
else {
wrong++;
msg = "回答错误! " + Answer + " 这个答案不对.\n\n"
+ "正确答案应该是 " +numC + ".";
}
score = "" + ((correct / (correct + wrong)) * 100);
score = score.substring(0,4) + "%";
alert(msg + "\n\n你的正确率: " + score + "\n"
+ correct + " 次答对\n"
+ wrong + " 次答错")
}
// End -->
</script>
第二步：把如下代码加入到<body>区域中
<center>
<form name=quizform>
<input type=button value="加法运算" onClick="add()">
<input type=button value="减法运算" onClick="subtract()">
<input type=button value="乘法运算" onClick="multiply()">
<input type=button value="除法运算" onClick="divide()">
<br>
<br>
<input type="radio" name="arithmetic">
低级难度
<input type="radio" name="arithmetic" checked>
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