????? ??? Javascript ?? ???? ??
????? ?? ??
??:
function sum(???? 1, ???? 2) {
?? ??
}
??: ???? ??? ?? ??? ????? 2?? ???, ??? ????? 3?? ??? ? ????.
??? ????? ??? ??? ?? ??? ?????. ??? ????:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>函數(shù)</title>
<script type="text/javascript">
function sum(a,b){
var c= a+b;
document.write(c);
}
sum(3,5);
</script>
</head>
<body>
</body>
</html>??? ?? ?? ??? ? ??????.
??? ??? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>函數(shù)</title>
<script type="text/javascript">
function sum(a,b){
var c= a+b;
document.write(c);
}
sum("歡迎來到","php中文網(wǎng)");
</script>
</head>
<body>
</body>
</html>
