WiFiThermostat/src/WiFiThermostat/html_confdev.ino

static const char html_confdev_script[] PROGMEM = R"=====(
<script>
  function g(i) { return document.getElementById(i) };
  function sp(i){g(i).type=(g(i).type==='text'?'password':'text');}
  var xhttp, reqTime, reqFin;
  function setCbx(el, da) {
    if(da == '1') {
      el.checked = true;
      el.style.visibility = 'visible';
    }
    else {
      el.checked = false;
      el.style.visibility = 'visible';
    }
  }
  function updCbxVal(el) {
    if (el.checked) el.value = '1';
    else {
      el.checked = true;
    el.value = '0';
      el.style.visibility = 'hidden';
    }
  }
  
  function transmit(f) {
    if (!xhttp) {   
    reqTime = 0;
    reqFin = false;
    xhttp = new XMLHttpRequest();
    xhttp.timeout = 1000;
    xhttp.overrideMimeType('application/json');
    xhttp.open('POST', 'confddev');
    xhttp.send(f ? (new FormData(f)) : '');
    xhttp.onreadystatechange = function () {
      if (xhttp.readyState === XMLHttpRequest.DONE && xhttp.status === 200) {
        var data = JSON.parse(xhttp.responseText);
        g('devName').value = data.devName;
        g('hostName').value = data.hostName;
        g('wifiappw').value = data.wifiappw;
        xhttp = null;
        reqFin = true;
       }
       else {
         if(!reqFin && reqTime > 10) {
           xhttp = null;
           reqFin = true;
         }
       }
     }
   }
    return false;
  }
  //transmit();
  function saveConf() {
    g('frmConf').submit();
  }
  function init() {
    transmit();
    setCbx(g('wifiappwSet'), 0);
  }
  setInterval(function () { ++reqTime; }, 1000);
</script>
)====="; // html_confdev_script

static const char html_confdev_body[] PROGMEM = R"=====(
<b>Configuration - Device</b>
<div class='config'>
<form id='frmConf' action='setConfDev' method='POST'>
<br>
<fieldset>
<legend>Device</legend>
<p><b>Device Name *</b><br><input type='text' name='devName' id='devName'></p>
<p><b>Hostname *</b><br><input type='text' name='hostName' id='hostName'></p>
<p><b>WiFi AP Password *</b><input type='checkbox' id='wifiappwSet' name='wifiappwSet' onclick='sp("wifiappw")'><br><input type='password' name='wifiappw' id='wifiappw'></p>
</fieldset>
<br>
</form>
<div></div>
<table style='width:100%'>
<td style='width:50%'><button onclick='location="conf";' class='bgrey'>Cancel</button></td>
<td style='width:50%'><button onclick='return saveConf()' class='bred'>Save</button></td>
</tr></table>
</div>
)====="; // html_confdev_body