在 JavaScript 中调用函数时出错

Question

I am trying to make a time and date clock.我正在尝试制作时间和日期时钟。 I am getting all sorts of errors when trying to call a function:尝试调用函数时出现各种错误：

<html>
<head>
    <title>Very Simple Clock By Ashton</title>
    <script>

        console.log("beginning creation of update function");

        function update() {
            document.getElementById('timeOutput').innerHTML = Date();
        }

        console.log("Successfully created update function");

        console.log("Calling the update function")

        update();

        console.log("successfully called the update function");
        </script>
</head>
<body>
    <p onload="update()" id="timeOutput">ERROR | Could Not Retrieve Time from server</p>
</body>

Answer 1

Body,Img,Iframe tags only have onload event p not supported.So Change with onclick event instead of onload Body,Img,Iframe 标签只有onload事件p不支持。所以用onclick事件而不是onload

Only onload of p仅加载p

 console.log("beginning creation of update function"); function update() { document.getElementById('timeOutput').innerHTML = Date(); }

 <p onload="update()" id="timeOutput">ERROR | Could Not Retrieve Time from server</p>

Change to click更改为点击

 console.log("beginning creation of update function"); function update() { document.getElementById('timeOutput').innerHTML = Date(); } console.log("Successfully created update function"); console.log("Calling the update function") update(); console.log("successfully called the update function");

 <p onclick="update()" id="timeOutput">ERROR | Could Not Retrieve Time from server</p>

Answer 2

Onload does not work for <p> tags, so it is useless. Onload 对<p>标签不起作用，所以它没用。

Enclosing update() inside window.onload() would allow it to work.将update()在window.onload()中将允许它工作。

在 JavaScript 中调用函数时出错

问题描述

2 个解决方案

解决方案1
0 2019-03-11 04:07:15

解决方案2
0 2019-03-11 04:11:23

在 JavaScript 中调用函数时出错

问题描述

2 个解决方案

解决方案1 0 2019-03-11 04:07:15

解决方案2 0 2019-03-11 04:11:23

解决方案1
0 2019-03-11 04:07:15

解决方案2
0 2019-03-11 04:11:23