merz MERZaveC

let timer = $('div[field="timer1"]');
let timeout = 800;
let block = $('#block1'); 

function checkTimer(){
    if ( '00 : 00 : 00 : 00' == timer.text() ) {
        block.find("[href='#1']").attr("href", "#2");
    }else{ 
        setTimeout(checkTimer, timeout);
    }
}

$( document ).ready(function(){
    setTimeout(checkTimer, timeout);
});