for-in-loop

JsLoops/for-in-loop.md

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+# JavaScript For...In Loop
+
+The `for...in` loop in JavaScript is used to iterate over the properties of an object. It is particularly useful when you want to loop through the keys (property names) of an object.
+
+## Syntax
+
+```javascript
+for (variable in object) {
+  // code to be executed
+}
+```
+```variable:``` A variable that will be assigned the property name on each iteration. <br/>
+```object:``` The object whose enumerable properties are iterated.
+## Note
+The for...in loop iterates over enumerable properties, including inherited ones. <br/>
+It is recommended to use caution when using for...in with arrays, as it may iterate over array methods and not just array elements.
+
+### Example
+```javascript
+// Sample object
+const car = {
+  make: 'Toyota',
+  model: 'Camry',
+  year: 2022
+};
+
+// Using for...in loop to iterate over object properties
+for (let key in car) {
+  console.log(key + ': ' + car[key]);
+}
+
+```