Create DOM.md

Author: sadanandpai

challenges/DOM.md

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+  <a href="/README.md#collection-of-modern-interview-code-challenges-on-javascript-suitable-for" id="home">Home</a>
+</div>
+
+## JavaScript interview code challenges on Document Object Model
+
+1. [Show the different ways of selecting an element from DOM](#Q1)
+1. [Show the ways to loop over the Nodelist obtained after querying for the elements](#Q2)
+ 
+---
+
+#### Q1
+### Show the different ways of selecting an element from DOM
+
+- The `typeof` operator returns a string indicating the type of the operand
+
+```js
+// querySelector, getElementById etc
+```
+
+###### Notes
+Note goes here
+
+###### References
+- 
+
+<br />
+
+#### Q2
+### Show the ways to loop over the Nodelist obtained after querying for the elements
+
+- The `typeof` operator returns a string indicating the type of the operand
+
+```js
+// for..in
+```
+
+###### Notes
+Note goes here
+
+###### References
+- 
+
+<br />
+
+[[↑] Back to top](#home)