33 lines
586 B
Markdown
33 lines
586 B
Markdown
# JavaScript函数
|
|
|
|
## 基本函数定义
|
|
```javascript :no-line-numbers
|
|
function greeter(name)
|
|
{
|
|
console.log("Hello, " + name);
|
|
}
|
|
```
|
|
调用函数`greeter('Alice');`
|
|
|
|
## 箭头方式定义函数
|
|
```javascript :no-line-numbers
|
|
funcGreeter = (name) => {
|
|
console.log("Hello, " + name);
|
|
}
|
|
```
|
|
如果只有一个参数的函数，可以省掉括号
|
|
```javascript :no-line-numbers
|
|
name => {
|
|
console.log("Hello, " + name);
|
|
}
|
|
```
|
|
如果函数体只包含一个返回语句，可以省略大括号
|
|
```javascript :no-line-numbers
|
|
(a, b) => {
|
|
return a+b;
|
|
}
|
|
|
|
//可以写成
|
|
(a, b) => a+b;
|
|
```
|