M Language XHR Functions

UseJavaScript

let
    javascriptDates =  Web.Page("
        <script type='text/javascript'>
            function wait(ms){
               var start = new Date().getTime();
               var end = start;
               while(end < start + ms) {
                 end = new Date().getTime();
              }
            }
            time = new Date();
            document.write('<p>',time,'</p>');
            wait(7000);
            time1 = new Date();
            document.write('<p>',time1,'</p>');
        </script>
"){0}[Data]{0}[Children]{1}[Children][Children],
    count = List.Count(javascriptDates),
    readDates = 
        List.Generate(
            ()=> 
                [
                    n = 0,
                    text = javascriptDates{n}[Text]{0}
                ], // initial
            each [n] < count, // condition
            each 
                [
                    n = [n] + 1,
                    text = javascriptDates{n}[Text]{0}
                ], // next
            each [text] // selector
        )
in
    readDates