Update 106-explicit-binding.md (#2015)

content/roadmaps/106-javascript/content/111-javascript-this-keyword/106-explicit-binding.md

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-# Explicit binding
+# Explicit binding
+
+In this method, you can force a function to use a certain object as its this. Explicit Binding can be applied using call(), apply(), and bind().
+
+call(): Pass in the required object as the first parameter during the function call. The actual parameters are passed after the object.
+
+apply(): Similar to call() with a difference in the way the actual arguments are passed. Here, the actual arguments are passed as an array.
+
+bind(): In this method, you create a new function with a fixed this. These types of functions created using bind() are commonly known as bound functions.
+
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://medium.com/swlh/javascript-this-ac28f8e0f65d'>Explicit Binding</BadgeLink>