JavaScript
Setup
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 {
// do something
}
Generate chars
Use Chart.js