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<meta charset="UTF-8">
<title>JS 常用函数</title>
<script type="text/javascript">
//1. 加法运算(两个数)
function sum(num1, num2) {
return num1 + num2;
}
//调用函数
var result = sum(10,20);
console.log(result);
//1.2 万能加法函数
function sum2(numbers) {
//变量
var result = null;
for (var i in numbers){
result += numbers[i];
}
return result;
}
var result2 = sum2([2,3,4,6,5,1]);
console.log(result2);
//5.3 匿名函数 需要有变量接收
var res = function () {
console.log('我是匿名函数');
}
//调用匿名函数
res();
</script>
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