我是编程新手。我学到了一些JavaScript,然后我编写了代码。一切都是真的,一切都很好,但是当它是假的时候我需要添加一些东西。所以我添加了一个while
,但这对我没用。有人可以帮帮我吗?谢谢你的答案!
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<link rel="stylesheet" href="styles.css"/>
<script src="JavaScript.js"></script>
<title>
Hello
</title>
</head>
<body>
<p id="Hello"></p>
<script>
function onload() {
alert("choose a number between 1 and 9");
var Multiply1 = prompt("Multiply this number by 9");
while (Multiply1 % 9 != 0) {
alert("This can't be true");
var Multiply = prompt("Multiply this number by 9");
}
while (multiply1 % 9 = 0) {
var add = prompt("Add the 2 digits you have");
}
while (add != 9) {
alert("This can't be true");
var add1 = prompt("Add the 2 digits you have");
}
while (add = 9) {
var decrease = prompt("deacrease the number you have chosen from the number you got:");
alert("the number you have chosen is " + (9-decrease));
}
}
</script>
<noscript>Please enable JS</noscript>
<button onclick="onload()">Cilck on me to start"</button>
</body>
</html>
答案 0 :(得分:0)
我看到一些问题 - 首先是Javascript区分大小写,因此您需要使用变量的确切大小写 - Multiply1 != multiply1
。接下来的是,只要条件为真,while
循环就会继续,因此您将被卡在最先评估为true
的循环中。相反,你应该有一个内部if
条件的外部循环。
function myFunction() {
var myValue = 0;
// this will run until "myValue" equals "something"
while(myValue !== something) {
if (myValue < 9) {
// update the value if it is less than 9
}
if (myValue === 10) {
// update the value if it is equal to 10
}
}
return myValue;
}
答案 1 :(得分:0)
尝试将false case放在if语句中。对于true和false,需要单独的while循环。两个循环就足够了。
答案 2 :(得分:0)
你应该避免在html中调用javascript函数,如下所示:
<button onclick="onload()">