theme(s) / editor / tutorial(s)
| Comments | // this is a one-line comment /* this comment could contain linebreaks */ |
| Constants | numbers 12.3 and strings "hi", "hi".charAt(0) is "h" |
| Variables | start with a letter, then use letters, digits or _ (declared with var) |
| Expressions | built from +, -, *, /, pow(x,y), sqrt(), PI, E, log(), floor(), ceil(), random(), sin(), cos(), tan(), atan() and constants, variables, functions |
| Assignments | v = expression; |
| Blocks | { statement 1;
...
statement n;
} |
| Conditions | expression == expression or <=, <, >, >=, !=... or !cond, cond1 && cond2, cond1 || cond2 |
| if - else | if (condition) block 1 else block 2 // optional |
| for-loops | for (var i=start; endcondition; i++)
block
|
| while-loops | while (condition)
block
|
| Functions | f = function(v1, ..., vn) {
statement 1;
...
return expression;
}
|
| Lists (arrays) | a = [1,2,"hi"] a[0] is 1, a.length is 3, a+[4] is [1,2,"hi",4] |
| Objects (hash tables) |
object = {attribute:expression, method:function}
a = {x:2, y:3, s:function(){return this.x+this.y}}
a.x is 3, a["x"] is 3, a.s() is 5
|
| Output | write("Hello"); writeln(" world");
|