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