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javascript - “文档未定义”

问题描述

JavaScript 新手，我很难解决这个问题。非常感谢

var attempts = 0;
var randomNumber;

while (randomNumber === 10) {
    randomNumber = (Math.random(10 - 1) + 1);
    attempts = attempts + 1;
}

document.write("It took " + attempts + " attempts");

标签： javascriptloopsdocument

解决方案

document由于您正在调用对象，因此代码应包含在 HTML 片段中。文档对象代表您的网页。如果您想访问 HTML 页面中的任何元素，您总是从访问文档对象开始。

例如 ：

<!DOCTYPE html>
<html>
<body>

<script>
var attempts = 0;
var randomNumber;

while (randomNumber === 10) {
    randomNumber = (Math.random(10 - 1) + 1);
    attempts = attempts + 1;
}

document.write("It took " + attempts + " attempts");
</script>

</body>
</html>

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