1.
SCRIPT. ³ , js, . , , , . ³ . . , , , .
,
<SCRIPT LANGUAGE="JavaScript ">
//
</SCRIPT >
<SCRIPT LANGUAGE="JavaScript " SRC=root/my.js>
</SCRIPT >
my.js .
2.
JavaScript , , . ϳ : , , , . . (parseInt () , parseFloat () , , ). ϳ (parseInt(x,8) , parseInt(x,16) ). ,
result = parseInt (42) // 42
result = parseInt (42.33) // 42
result = ( + 2500) // 2500
' length, :
result = ( + 2500).length // 4
, , typeof, "number" , , "string" , "boolean" , "undefined" .
3.
, , .
:
if () { 1 }
else { 2 };
-
switch () {
case 1:;
break;
case 2:;
break;
...
default:;
}
:
for (1; ; 2)
{... }
while ()
{... }
do
{... }
while ();
4.
JavaScript , JavaScript (Date, Math, String, Image .) ' .
' Data var d=new Date (), ' . :
var sDate=new Date ("Month dd,yyyy hh:mm:ss ")
|
|
|
' , :
sDate.toLocaleString() -
String. '.
varSt=new String (" ");
length , cartAt (i), , i- -, indexOf ("...",i) , i, .
.
Math. ' , , . , JavaScript , . 16
16
| acos() | ceil() | ||
| asin() | floor() | ||
| atan() | round() | ||
| cos() | max() | ||
| sin() | min() | ||
| exp() | () | sqrt() | |
| log() | random() | (0...1) |
, alert (Math.random()) ' , .
