Electron js中的按钮单击事件绑定 [英] Button click event binding in Electron js
问题描述
我已经开始使用电子js开发桌面应用程序。
I have started using electron js to develop desktop application.
我想知道如何将按钮单击事件与javascript函数绑定在一起,以便执行其他操作
I want to know that how to bind button click event with javascript function so that I can perform other operation.
我在HTML代码下面使用:
I used below HTML code:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Manav Finance</title>
</head>
<body>
<input type="button" onclick="getData()" value="Get Data" />
</body>
<script>
// You can also require other files to run in this process
require('./renderer.js')
</script>
</html>
我的renderer.js代码如下:
My renderer.js code looks like this:
function getData(){
console.log('Called!!!');
}
但我收到以下错误消息:
But I am getting error that:
未捕获的ReferenceError:在HTMLInputElement.onclick上未定义getData
Uncaught ReferenceError: getData is not defined at HTMLInputElement.onclick
我做错什么了吗?
更新
已更新HTML文档并删除了require()方法及其现在可以正常工作:
Updated HTML document and removed require() method and its working now:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Manav Finance</title>
<script src="renderer.js"></script>
</head>
<body>
<input type="button" id="btnEd" value="Get Data" onclick="getData()" />
</body>
</html>
推荐答案
为以后的用户进行解释。 HTML文档中的< script>
标签在全局范围内执行,这意味着 this === window
,即
To explain this for future users. <script>
tag's in an HTML document are executed in the global scope, this means that this === window
, I.e. any function or variable declared in the script inherently becomes global.
当您要求
一个脚本时,该脚本或脚本中的所有功能或变量都会固有地变为全局变量。自己的上下文(它包装在另一个函数中,所以 this!== window
,即脚本中声明的任何函数或变量都不全局可用。
When you require
a script it becomes isolated in it's own context (it is wrapped in another function so this !== window
, I.e. any function or variable declared in the script is not available globally.
正确的方法是使用 require('./ renderer.js')
并使用此代码
The correct way to do this is to use require('./renderer.js')
and to use this code
function getData() {
...
}
document.querySelector('#btnEd').addEventListener('click', () => {
getData()
})
这篇关于Electron js中的按钮单击事件绑定的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!