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<title>Document</title>
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<script>
//js函数的书写
function myFunction() {
console.log("你好");
}
//左边是funcion关键字 后面是函数名，里面写表达式
//带参数的两种写法
//1.在函数里面写实参
function myFunction(num,time,action) {
var num=7,time="点",action="起床";
console.log(num + time + action);
}
//2.在调用函数的时候写实参
function myFunction(num,time,action) {
console.log(num + time + action);
}
myFunction("7", "点","起床");
//带返回值写法
function myFunction(a,b){
var a=5,b=6;
return a+b;
}
//外面接受返回值
function num(a,b) {
return c=a+b;
}
var z=num(7,8); //通过=把return的值获取到
console.log(z);
</script>
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