Rename js snippets

snippets/js/s/size-of-array-object-or-string.md

@@ -0,0 +1,32 @@
+---
+title: Size of array, object or string
+type: snippet
+language: javascript
+tags: [object,array,string]
+cover: digital-nomad-13
+dateModified: 2023-01-20T13:25:47+03:00
+---
+
+Gets the size of an array, object or string.
+
+- Get type of `val` (`array`, `object` or `string`).
+- Use `Array.prototype.length` property for arrays.
+- Use `length` or `size` value if available or number of keys for objects.
+- Use `size` of a [`Blob` object](https://developer.mozilla.org/en-US/docs/Web/API/Blob) created from `val` for strings.
+
+```js
+const size = val =>
+  Array.isArray(val)
+    ? val.length
+    : val && typeof val === 'object'
+      ? val.size || val.length || Object.keys(val).length
+      : typeof val === 'string'
+        ? new Blob([val]).size
+        : 0;
+```
+
+```js
+size([1, 2, 3, 4, 5]); // 5
+size('size'); // 4
+size({ one: 1, two: 2, three: 3 }); // 3
+```