JavaScript
Is a programming language that is core of Web.
Setup¶
Language¶
Syntax¶
Command | Action |
---|---|
// |
Comment |
Data Types¶
Types | Content |
---|---|
boolean | true / false |
number | 123 |
string | "hello" |
array | [1,2,["a","b"]] |
object | {"color":"red"} |
Conversion¶
- From string to float:
var floatValue = +(val);
Array¶
Transpose an array:
array = [ ["a", "b"],["c", "d"]]
array[0].map((_, colIndex) => array.map(row => row[colIndex]))
Functions¶
Simple test that return a JSON with true:
if (a === true ){
return {b} ;
} else if (condition 1 && condition 2) {
} else {
// do something
}
Logical operators¶
Operator | JavaScript |
---|---|
AND | && |
NOT | ! |
OR | || |
Equal | == |
Generate chars¶
Use Chart.js