Angular: Formatting numbers with commas

Solution 1:

Use DecimalPipe like this

{{attr | number}}

Working Plunker

Documentation available at https://angular.io/api/common/DecimalPipe

function printNo() {
  document.getElementById('text').innerHTML =
  Number(1234355).toLocaleString('en-GB');
}

 <!DOCTYPE html>
 <html>
    <head></head>
    
     <body onload="printNo()">
      <h1 id="text"></h1>
        
     </body>
</html>

Reference link