php - Passing javascript value to html -

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this related previous question: retrieving video database using php

on previous question pass speedmbps in javascript using ajax form , $( "#speed" ).val( html ); expect return value unable embed html code in viewvideo.php.

i thought of different way pass speedmbps php.

passing value speedmbps html form can used method post sent data php file. 

var imageaddr = "testimage.jpg";  var downloadsize = 2097152; //bytes  window.onload = function() {     var oprogress = document.getelementbyid("speed");     oprogress.value = "loading image, please wait...";     window.settimeout(measureconnectionspeed, 1); };  function measureconnectionspeed() {     var oprogress = document.getelementbyid("speed");     var starttime, endtime;     var download = new image();     download.onload = function () {         endtime = (new date()).gettime();         showresults();     }      download.onerror = function (err, msg) {         oprogress.value = "invalid image, or error downloading";     }      starttime = (new date()).gettime();     var cachebuster = "?nnn=" + starttime;     download.src = imageaddr + cachebuster;       function showresults() {         var duration = (endtime - starttime) / 1000;         var bitsloaded = downloadsize * 8;         var speedbps = (bitsloaded / duration).tofixed(2);         var speedkbps = (speedbps / 1024).tofixed(2);         var speedmbps = (speedkbps / 1024).tofixed(2);         return speedmbps;         oprogress.value = "your connection speed is:        <br />" +             speedbps + " bps<br />"   +             speedkbps + " kbps<br />" +             speedmbps + " mbps<br />";  document.getelementbyid("speed").value = speedmbps;

html code

                <input type="text" id="speed" name="speed" value="">

viewvideo.php

$speed= $_post['speed'];

edited: when echo $speed in php file not echo.. no value pass javascript html form.

error on console unexpected end of input on 

document.getelementbyid("speed").value = speedmbps;

your using return statement before setting data form.

document.getelementbyid("speed").value = speedmbps;    return speedmbps;

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