Special Schemes of Node | URL.protocol API

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.

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// 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 
const myURL = new URL('http://gfg.org/foo'); 
      
// Display href value of myURL before change 
console.log("Before Change"); 
  
console.log(myURL.href); 
      
// Assinging protocol portion 
// using protocol 
console.log(); 
myURL.protocol = 'https'; 
      
// Display href value of myURL after change 
console.log("After Change"); 
console.log(myURL.href); 

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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.













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// 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  


const myURL = new URL('smtp://gfg.org/foo');  


       


// Display href value of myURL before change  


console.log("Before Change");  


console.log(myURL.href);  


       


// Assinging protocol portion  


// using protocol  


console.log();  


myURL.protocol = 'http';  


       


// Display href value of myURL after change  


console.log("After Change");  


console.log(myURL.href);  



















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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.













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// 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  


const myURL = new URL('ftp://gfg.org/foo');  


       


// Display href value of myURL before change  


console.log("Before Change");  


console.log(myURL.href);  


       


// Assinging protocol portion  


// using protocol  


console.log();  


myURL.protocol = 'fish';  


       


// Display href value of myURL after change  


console.log("After Change");  


console.log(myURL.href);  



















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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.













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// 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  


const myURL = new URL('ssh://gfg.org/foo');  


       


// Display href value of myURL before change  


console.log("Before Change");  


console.log(myURL.href);  


       


// Assinging protocol portion  


// using protocol  


console.log();  


myURL.protocol = 'fish';  


       


// Display href value of myURL after change  


console.log("After Change");  


console.log(myURL.href);  



















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Output:


Before Change
ssh://gfg.org/foo

After Change
fish://gfg.org/foo



Example 5: It can be used as a getter.













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// Node program to demonstrate the  


// url.pathname API as Getter  


   


// Importing the module 'url'  


const http = require('url');  


   


// Creating and initializing myURL  


const myURL = new URL('https://gfg.org/foo');  


   


// Getting the path portion  


// using pathname  


const protocol = myURL.protocol;  


   


// Display path value  


console.log(protocol);  



















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Output:


https:



Reference: https://developer.mozilla.org/en-US/docs/Web/API/URL/protocol



          
          
          
          

            

    

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