how to open new window in angular6

Question

if (window.navigator && window.navigator.msSaveOrOpenBlob) {

window.navigator.msSaveOrOpenBlob(objectUrl, filename);

//window.open(objectUrl);

let opner = window.open(objectUrl, '_blank', 'height=700,width=700');

 

How to open in new window in angular6 . its working fine in chrome but not ie.