30 lines
844 B
Markdown
30 lines
844 B
Markdown
|
# If
|
||
|
|
|
||
|
|
Run code based on a condition. #docs #if #then #else #endif #language #elseif
|
||
|
|
|
||
|
|
### @parent blocks/language
|
||
|
|
|
||
|
|
|
||
|
|
Conditionally run code depending on whether a [Boolean](/microbit/reference/types/boolean) condition is true or false.
|
||
|
|
|
||
|
|
### Block Editor
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
In the Block Editor, click on the dark blue gear icon (see above) to add an *else* or *if* to the current block.
|
||
|
|
|
||
|
|
### Example: adjusting screen brightness
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
If the screen [brightness](/microbit/reference/led/brightness) is `< 100`, this code sets the brightness to `255`:
|
||
|
|
|
||
|
|
### Lessons
|
||
|
|
|
||
|
|
[love meter](/microbit/lessons/love-meter), [zoomer](/microbit/lessons/zoomer)
|
||
|
|
|
||
|
|
### See also
|
||
|
|
|
||
|
|
[while loop](/microbit/reference/loops/while), [for](/microbit/reference/loops/for), [boolean](/microbit/reference/types/boolean)
|
||
|
|
|