The url.protocol is an inbuilt application programming interface of class URL within URL module which is used to get and set the protocol scheme of the URL.
Syntax:
const url.protocol
Return value: It get and set protocol scheme of the URL
Example 1: This example changes the special protocols to hypothetical protocols like http->https.
// Node program to demonstrate the // url.protocol API as Setter // Changing of protocols to special // protocols like http->https // Importing the module 'url' const http = require( 'url' );
// Creating and initializing myURL // Display href value of myURL before change console.log( "Before Change" );
console.log(myURL.href); // Assigning protocol portion // using protocol console.log(); myURL.protocol = 'https' ;
// Display href value of myURL after change console.log( "After Change" );
console.log(myURL.href); |
Output:
Before Change http://gfg.org/foo After Change https://gfg.org/foo
Example 2: This example try changes the non-special protocol to a special protocol like smtp->http but it will not change.
// Node program to demonstrate the // url.protocol API as Setter // Changing the protocols to special // protocols like smtp->http // Importing the module 'url' const http = require( 'url' );
// Creating and initializing myURL // Display href value of myURL before change console.log( "Before Change" );
console.log(myURL.href); // Assigning protocol portion // using protocol console.log(); myURL.protocol = 'http' ;
// Display href value of myURL after change console.log( "After Change" );
console.log(myURL.href); |
Output:
Before Change smtp://gfg.org/foo After Change smtp://gfg.org/foo
Example 3: This example try to change the special protocols to hypothetical protocols like ftp->fish but it will not change.
// Node program to demonstrate the // url.protocol API as Setter // Changing of protocols to special // protocols like ftp->fish // Importing the module 'url' const http = require( 'url' );
// Creating and initializing myURL // Display href value of myURL before change console.log( "Before Change" );
console.log(myURL.href); // Assigning protocol portion // using protocol console.log(); myURL.protocol = 'fish' ;
// Display href value of myURL after change console.log( "After Change" );
console.log(myURL.href); |
Output:
Before Change ftp://gfg.org/foo After Change ftp://gfg.org/foo
Example 4: This example try to change from non-special protocols to hypothetical protocols like ssh->fish.
// Node program to demonstrate the // url.protocol API as Setter // Changing the protocols to special // protocols like ssh->fish // Importing the module 'url' const http = require( 'url' );
// Creating and initializing myURL // Display href value of myURL before change console.log( "Before Change" );
console.log(myURL.href); // Assigning protocol portion // using protocol console.log(); myURL.protocol = 'fish' ;
// Display href value of myURL after change console.log( "After Change" );
console.log(myURL.href); |
Output:
Before Change ssh://gfg.org/foo After Change fish://gfg.org/foo
Example 5: It can be used as a getter.
// Node program to demonstrate the // url.pathname API as Getter // Importing the module 'url' const http = require( 'url' );
// Creating and initializing myURL // Getting the path portion // using pathname const protocol = myURL.protocol; // Display path value console.log(protocol); |
Output:
https:
Reference: https://developer.mozilla.org/en-US/docs/Web/API/URL/protocol