HoshinoKoji/jsPsych
1
0
Fork 0
mirror of https://github.com/jspsych/jsPsych.git synced 2025-05-10 11:10:54 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

use string as seed

Browse Source
This commit is contained in:
Josh de Leeuw 2022-03-11 12:31:47 -05:00
parent f2f9a00ae0
commit 2cea5640f7
2 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
docs/reference/jspsych-randomization.md
View File

@ -477,7 +477,7 @@ jsPsych.randomization.setSeed(seed)
| Parameter | Type | Description |
| --------- | ----- | ------------------------------ |
| seed | string or number | A seed for the random number generator |
| seed | string | A seed for the random number generator |
### Return value
@ -495,12 +495,19 @@ The seed value will be returned from the function call, allowing you to save it
### Examples
#### Shuffle an array
#### Use a random 32-bit seed and save to data
```javascript
var myArray = [1,2,3,4,5];
var shuffledArray = jsPsych.randomization.shuffle(myArray);
// output: shuffledArray = [3,2,4,1,5]
const seed = jsPsych.setSeed();
jsPsych.data.addProperties({
rng_seed: seed
});
```
#### Use your own seed
```javascript
jsPsych.setSeed("jspsych");
```
---

4
packages/jspsych/src/modules/randomization.ts
View File

@ -7,10 +7,10 @@ import seedrandom from "seedrandom";
* @param seed An optional seed. If none is given, a random seed will be generated.
* @returns The seed value.
*/
export function setSeed(seed?) {
export function setSeed(seed?: string) {
if (!seed) {
const prng = seedrandom();
seed = prng.int32();
seed = prng.int32().toString();
}
seedrandom(seed, { global: true });
return seed;