Complete everything be true algorithm

Author: ahcode0919

src/fcc-intermediate-algorithms/everything_be_true.js

@@ -0,0 +1,3 @@
+export function truthCheck(collection, pre) {
+  return collection.every((val) => Boolean(val[pre]));
+}

src/fcc-intermediate-algorithms/fcc-intermediate-algorithms.md

@@ -20,6 +20,7 @@ From the Freecodecamp Javascript Certification Intermediate Algorithms module
 - [Smallest Common Multiple](#smallest-common-multiple)
 - [Drop It](#drop-it)
 - [Binary Agents](#binary-agents)
+- [Everything Be True](#everything-be-true)
 
 #### Sum All Numbers In a Range
 
@@ -380,3 +381,19 @@ export function binaryAgents(str) {
   return stringArray.join("");
 }
 ```
+
+#### Everything Be True
+
+Check if the predicate (second argument) is truthy on all elements of a collection (first argument).
+
+In other words, you are given an array collection of objects. The predicate pre will be an object property and you need to return true if its value is truthy. Otherwise, return false.
+
+In JavaScript, truthy values are values that translate to true when evaluated in a Boolean context.
+
+Remember, you can access object properties through either dot notation or [] notation.
+
+```javascript
+export function truthCheck(collection, pre) {
+  return collection.every((val) => Boolean(val[pre]));
+}
+```

tests/fcc-intermediate-algorithms/everything_be_true.test.js

@@ -0,0 +1,6 @@
+import { truthCheck } from "../../src/fcc-intermediate-algorithms/everything_be_true";
+
+test('should ', () => {
+  expect(truthCheck([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy", "sex": "male"}, {"user": "Laa-Laa", "sex": "female"}, {"user": "Po", "sex": "female"}], "sex")).toBe(true);
+  expect(truthCheck([{"user": "Tinky-Winky", "sex": "male"}, {"user": "Dipsy"}, {"user": "Laa-Laa", "sex": "female"}, {"user": "Po", "sex": "female"}], "sex")).toBe(false)
+});