How to redirect previous page using javascript

Question

How to redirect previous page after redirect to previous page. After form submission i am redirect form to thank you page but after sometimes i want redirect previous page.

Below is the code i am using

<script>
document.addEventListener( 'wpcf7mailsent', function( event ) {
    //location = 'abc.com1/thank-you/';
     if ( '17615' == event.detail.contactFormId ) { 
     } 
    else if( '19110' == event.detail.contactFormId ){
        location = 'abc.com1/thank-you-broucher/';
    }
    else {
         location = 'abc.com1/thank-you/';
     }
}, false );
</script>

after location redirect i want again redirect to my first original page.

Anyone have idea then let me know

Answer 1

use history.back

window.history.back();