如何在调用函数时向函数发送变量？

Question

如何在调用变量message时将其发送到函数callmessage？

<script>
var message = 'hello and this is your message'

callmessage(); // how can i send the variable 'message' to the function when I call it

function callmessage() {
   console.log(the text sent when the function was called)
}
</script>

Answer 1

<script>
var message = 'hello and this is your message'

callmessage(message);

function callmessage(x) {
   console.log(x);
}
</script>

如果您刚刚进入javascript，我强烈建议您查看一些有助于您编写更好代码的内容：

• https://eslint.org/
• https://github.com/airbnb/javascript
• ES6功能，如模块，箭头功能等，以及https://babeljs.io/如何用于将ES6转换为ES5以便在浏览器中使用

Answer 2

您将其作为参数发送给函数，如：

var message = 'hello and this is your message'
callmessage(message); // how can i send the message variable
function callmessage(themessage) {
  console.log(themessage)
}

我高度建议阅读https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Functions