Get p5js Version

.block

height: 200
scrolling: no
border: no
license: cc-by-4.0

get_p5js_version.js

/**
 * Get p5js Version (v1.1.1)
 * GoToLoop (2020-Jul-31)
 *
 * https://Discourse.Processing.org/t/detect-p5-1-1-9-vs-1-0-0/22920/2
 * https://Bl.ocks.org/GoSubRoutine/6125a5806872f7d4d93d11870b607851
 */

'use strict';

p5.prototype._version = p5.prototype._release = null;

p5.prototype.getVersion = function () {
  const p5jsURL = /p5$|p5@|p5(?:\.min)?\.[mc]?[jt]s/,
        p5jsVER = /p5(?:\.min)?\.js v(\d+)\.(\d+)\.(\d+) (\w+) (\d+), (\d+)/,
        p5jsERR = URIError('No p5js script found within document!'),
        p5jsNOT = Error('p5js file had no version comment header!'),
        FUNCT = 'function', DOT = '.', SPC = ' ';

  return function (success, fail) {
    const { scripts } = document,
          { length: len } = scripts,
          semver = new Uint8Array(3),
          isSuccessAFunct = typeof success == FUNCT,
          isFailAFunct = typeof fail == FUNCT;

    for (var i = 0; i < len; ++i)  if (p5jsURL.test(scripts[i].src))  break;

    if (i == len)  isFailAFunct && fail(p5jsERR);

    else this.loadStrings(
      scripts[i].src,

      ([ comment ]) => {
        const matches = p5jsVER.exec(comment);
        if (!matches)  return isFailAFunct && fail(p5jsNOT);

        for (i = 0; i < 3; semver[i++] = matches[i]);

        p5.prototype._version = this._version = semver.join(DOT);
        p5.prototype._release = this._release = matches.slice(4).join(SPC);

        isSuccessAFunct && success(matches);
      },

      err => isFailAFunct && fail(err)
    );

    return semver;
  };
}();

index.html

<script defer src=https://cdn.JsDelivr.net/npm/p5></script>
<!-- <script defer src=https://Unpkg.com/p5></script> -->

<!-- <script defer src=https://cdn.JsDelivr.net/npm/[email protected]></script> -->
<!-- <script defer src=https://Unpkg.com/[email protected]></script> -->

<!-- <script defer src=https://cdn.JsDelivr.net/npm/[email protected]></script> -->
<!-- <script defer src=https://Unpkg.com/[email protected]></script> -->

<!-- <script defer src=https://cdn.JsDelivr.net/npm/[email protected]></script> -->
<!-- <script defer src=https://Unpkg.com/[email protected]></script> -->

<!-- <script defer src=https://cdn.JsDelivr.net/npm/[email protected]/lib/p5.js></script> -->
<!-- <script defer src=https://Unpkg.com/[email protected]/lib/p5.min.js></script> -->

<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

latest.html

<script defer src=https://Unpkg.com/p5></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

sketch.js

/**
 * Get p5js Version (v1.1.1)
 * GoToLoop (2020-Jul-31)
 *
 * https://Discourse.Processing.org/t/detect-p5-1-1-9-vs-1-0-0/22920/2
 * https://Bl.ocks.org/GoSubRoutine/6125a5806872f7d4d93d11870b607851
 */

'use strict';

var version;

function preload() {
  version = getVersion(console.log, console.error);
}

function setup() {
  createCanvas(500, 200).mousePressed(redraw);
  noLoop();

  colorMode(HSB, 360, 1, 1);
  textSize(50);
  textAlign(CENTER, CENTER);

  console.info(version);
}

function draw() {
  background(~~random(360), 1, 1);
  const info = p5.prototype._version + '\n' + p5.prototype._release;
  text(info, width >> 1, height >> 1);
}

v0.10.2.html

<script defer src=https://Unpkg.com/[email protected]></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v0.2.22.html

<script defer src=https://Unpkg.com/[email protected]/lib/p5.min.js></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v0.2.23.html

<script defer src=https://cdn.JsDelivr.net/npm/[email protected]/lib/p5.js></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v0.3.16.html

<script defer src=https://Unpkg.com/[email protected]></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v0.4.24.html

<script defer src=https://cdn.JsDelivr.net/npm/[email protected]></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v0.5.16.html

<script defer src=https://Unpkg.com/[email protected]></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v0.6.1.html

<script defer src=https://cdn.JsDelivr.net/npm/[email protected]></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>

v1.0.0.html

<script defer src=https://cdn.JsDelivr.net/npm/[email protected]></script>
<script defer src=get_p5js_version.js></script>
<script defer src=sketch.js></script>