Javascript ?? ????: ?? ?? ?? ??
?? ?? ?? ??
??? ??? ??? ??? ?? ???? ??? ??? ?? ????.
?? return ?? ???? ??? ? ????.
return ?? ???? ?? ??? ???? ??? ?? ?????.
??:
?? ?? ??(){
?? ?? ;
}
?? ??? ??? ?????
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>函數(shù)</title>
<script type="text/javascript">
function msg(){
var sum = 15;
return sum;
}
var ss = msg();
document.write(ss);
</script>
</head>
<body>
</body>
</html>? ????? ?? ?? ?? ?????. of 15 ?? ?? sum? ?? ???? ?? ??? ?? 15? ???.
??? ??? ?? ?? ??? ?????
????? ?? ?????. ?? ??
? ????? ????? ??? ??? ?????. ??? ??? ????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>函數(shù)</title>
<script type="text/javascript">
function msg(a,b){
var sum = a+b;
return sum;
}
var ss = msg("歡迎來到，","php中文網(wǎng)");
document.write(ss);
</script>
</head>
<body>
</body>
</html>
