JavaScript provides an encodeURIComponent() function to encode uri components. This function encrypt the special characters provided in the url such as “space , / ? : @ & = + $ #“.
Syntax
encodeURIComponent(uri)
Example

var uri="codesolution.org/calculate-time-between-two-dates/";
var encodeduri=encodeURIComponent(uri);
$("#uri").html(uri);
$("#encodeduri").html(encodeduri);

Html

<h2>
How to encode URI components in javascript?
</h2>
<b>URI:</b> <div id=uri></div>
<b>Encoded URI:</b> <div id="encodeduri"></div>

Result
How to encode URI components in javascript?
URI:
codesolution.org/calculate-time-between-two-dates/
Encoded URI:
codesolution.org%2Fcalculate-time-between-two-dates%2F
Try it