下面的代码是一个简单的猜数字游戏。
函数 guess() 被调用两次。我完全不明白为什么会发生这种情况。
<!DOCTYPTE html>
<html>
<head><title>Number Guessing Game version 1.0</title></head>
<body>
<form onsubmit="guess();return false;">
<p><h2>I am your host, human. I am thinking of a number between 0 and 100, including both</h2></p>
<p><input type="text" id="inputId" autocomplete="off"></input><button id="submitButton" onclick="guess()">Guess!!</button></p>
<p><span id="msgId"></span></p>
<p>Guesses Remaining:<span id="guessId"></span></p>
</body>
</form>
<script language="javascript">
var doubleRandom = Math.random();
var guessesLeft = parseInt("10");
var intRandom = Math.round((doubleRandom*100));
var spanObj = document.getElementById("msgId");
var guessObj = document.getElementById("guessId");
guessObj.innerHTML=guessesLeft;
function guess()
{
var guessedNumber = document.getElementById("inputId").value;
alert(23);
if(guessedNumber==null || guessedNumber.trim()==''){
spanObj.innerHTML="Type something, human";
return;
}
if(isNaN(guessedNumber)){
spanObj.innerHTML="That better be a number, Human.";
return;
}else{
if(guessedNumber>100){
spanObj.innerHTML="That better be a number between 0 and 100, Human.";
return;
}else{
spanObj.innerHTML="";
}
}
var accurateAnswer = Math.round(guessedNumber);
var difference = guessedNumber-intRandom;
if(difference>45){
spanObj.innerHTML="That's way too high, Human";
return;
}else if(difference<-45){
spanObj.innerHTML="That's way too low, Human";
}else if(difference<=45 && difference>0){
spanObj.innerHTML="That's high, Human";
}else if(difference>=-45 && difference<0 ){
spanObj.innerHTML="That's low, Human";
}else{
spanObj.innerHTML="Bingo!! You got it!! Refresh to play agin.";
}
if(guessesLeft<=0){
spanObj.innerHTML="You have exhausted your number of guesses. Try again. Refreshing game....";
setTimeout("location.reload(true)", 3000);
}
guessesLeft=guessesLeft-1;
guessObj.innerHTML=guessesLeft;
}
</script>
</html>
最佳答案
这是因为您调用了它两次:一次在按钮的 onclick 事件中，一次在表单的 onsubmit 事件中。删除其中之一。
关于javascript - 下面给出的代码中的我的 javascript 函数被调用两次，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17774515/