main strategies

main.js

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+const ALLC = function allwaysCooperate(foeHistory) {
+    return true;
+}
+
+const ALLD = function allwaysDefect(foeHistory) {
+    return false;
+}
+
+const RAND = function randomChoice(foeHistory) {
+    if (Math.random() > 0.5) {
+        return true;
+    }
+    return false;
+}
+
+const TFT = function titForThat(foeHistory) {
+    if (foeHistory.length === 0) {
+        return true;
+    }
+    return foeHistory[foeHistory.length - 1];
+}
+
+const GRIM = function grimTrigger(foeHistory) {
+    if (foeHistory.some(e => e === false)) {
+        return false;
+    }
+    return true;
+}
+
+const MAJ = function majority(foeHistory) {
+    let nbTrue = 0;
+    let nbFalse = 0;
+
+    for (const valeur of foeHistory) {
+        if (valeur) {
+            nbTrue++;
+        } else {
+            nbFalse++;
+        }
+    }
+    if (nbTrue < nbFalse) {
+        return false;
+    }
+    return true;
+}
+
+class Party {
+    constructor(length) {
+        this.length = length;
+
+        this.functions = [ALLC, ALLD, RAND, TFT, GRIM, MAJ];
+
+        this.grid = [];
+
+        for (let i = 0; i < length; i++) {
+            this.grid[i] = [];
+
+            for (let j = 0; j < length; j++) {
+                const index = Math.floor(Math.random() * this.functions.length);
+                this.grid[i][j] = this.functions[index];
+            }
+        }
+    }
+}