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google apps script - How can I make a cell change colour every x seconds?

So I am working on a document on google sheets and I want it to look nice, this code really is unimportant but it would great to know how to do it, as every bit I learn anyways, can help in the future.

Something a bit more technical could be 1 cell changes to a certain colour, then the other cell identifies that that cell has changed colour so it also changes colour, and it keeps going until it loops on the last cell (to kind of create a rainbow effect).

Please remember though, a lot of conditional formatting is unavailable in google docs sheets and you can't use macros, you have to use Google Sheet Script.

See Question&Answers more detail:os

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Change color every x seconds

Code.gs:

function onOpen(){
  SpreadsheetApp.getUi().createMenu('MyTools')
  .addItem('Show Sidebar', 'showTimerSideBar')
  .addToUi();
}

function showTimerSideBar()
{
  var ui=HtmlService.createHtmlOutputFromFile('datatimer').setTitle('Color Timer');
  SpreadsheetApp.getUi().showSidebar(ui);
}

function changeData(){
  var ss=SpreadsheetApp.getActive();
  var sh=ss.getSheetByName('ColorChange');
  var rg=sh.getRange('A1:A10');
  var colorA=rg.getBackgrounds();
  var n=new Date();
  var tmr=Utilities.formatDate(n, Session.getScriptTimeZone(), "HH:mm:ss")
  var rObj={color:colorA[Math.floor(Math.random()*colorA.length)][0],timer:tmr};
  ss.toast(Utilities.formatString('timer: %s color: %s', rObj.timer,rObj.color));
  return rObj;
}

function saveData(dObj) {
  var ss=SpreadsheetApp.getActive();
  var sh=ss.getSheetByName('Data');
  var lr=sh.getLastRow();
  sh.getRange(lr+1,1).setValue(dObj.timer);
  sh.getRange(lr+1,2).setBackground(dObj.color);
}

function setA1(color) {
  var ss=SpreadsheetApp.getActive();
  var sh=ss.getSheetByName('ColorChange');
  var rg=sh.getRange('A1');
  rg.setBackground(color);
}

datatimer.html:

<!DOCTYPE html>
<html>
  <head>
    <base target="_top">
    <link rel="stylesheet" href="https://ssl.gstatic.com/docs/script/css/add-ons1.css">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no"/>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <style>
      #my_block{border:2px solid black;background-color:rgba(0,150,255,0.2);padding:10px 10px 10px 10px;}
      #conv_block{border: 1px solid black;padding:10px 10px 10px 10px;}
      .bttn_block{padding:2px 5px 0px 0px;}
      .sndr_block {border:1px solid rgba(0,150,0,0.5);background-color:rgba(150,150,0,0.2);margin-bottom:2px;}
    </style>
  </head>
  <body>
  <form>
    <div id="my_block" class="block form-group">
      <div class="sndr_block">
        <div id="myClock" style="font-size:20px;font-weight:bold;"></div>
        <br />Timer Duration(seconds):
        <br /><input id="txt1" type="text" size="4" class="action"/>
        <select id="sel1" onChange="loadTxt('sel1','txt1');">
        </select>
        <div id="cntdiv"></div>
        <br /><strong>Timer Controls</strong>
        <div class="bttn_block"><input type="button" value="Start" name="startShow" id="startShow" onClick="startmytimer();changeData();" class="red" /></div>
        <div class="bttn_block"><input type="button" value="Stop" name="stopTimer" id="stopTimer" class="red" /></div>
        <div class="bttn_block"><input type="button" value="Single Ping" name="changedata" id="chgData" class="red" onClick="changeData();" /></div>
        <div class="bttn_block"><input type="button" value="Red" name="setA1Red" id="setRed" class="red" onClick="setA1('#ff0000');" /></div>
        <div class="bttn_block"><input type="button" value="Green" name="setA1Green" id="setGreen" class="green" onClick="setA1('#00ff00');" /></div>
      </div>
      <div id="btn-bar">
        <br /><input type="button" value="Exit" onClick="google.script.host.close();" class="green" />
      </div>
    </div>
  </form>
    <script>
    var idx=1;
    var myInterval='';
    var cnt=0;
      $(function() {
        var select = document.getElementById('sel1');
        select.options.length = 0; 
        for(var i=1;i<61;i++)
        {
          select.options[i-1] = new Option(i,i * 1000);
        }
        select.selectedIndex=4;
        $('#startTimer').click(startmytimer);
        $('#stopTimer').click(stopTimer);
        $('#txt1').val(String(select.options[select.selectedIndex].value));
        startTime();
      });

      function startTime(){
        var today = new Date();
        var h = today.getHours();
        var m = today.getMinutes();
        var s = today.getSeconds();
        m = checkTime(m);
        s = checkTime(s);
        document.getElementById('myClock').innerHTML =
        h + ":" + m + ":" + s;
        var t = setTimeout(startTime, 500);
      }

      function checkTime(i){
        if (i < 10) {i = "0" + i};  // add zero in front of numbers < 10
        return i;
      }

      function startmytimer(){
        document.getElementById('cntdiv').innerHTML='<strong>Timer Started:</strong> ' + document.getElementById('myClock').innerHTML;
        myInterval=setInterval(changeData, Number($('#txt1').val()));
      }

      function stopTimer(){
        document.getElementById('cntdiv').innerHTML='Timer Stopped';
        clearInterval(myInterval);
      }

      function loadTxt(from,to){
        document.getElementById(to).value = document.getElementById(from).value;
      }

      function exportData() {
        google.script.run.saveData(cA);
      }

      function changeData(){
        $('#txt1').css('background','#ffffcc');
        google.script.run
        .withSuccessHandler(function(rObj){
          updateDisplay(rObj.timer);
          saveData({timer:rObj.timer,color:rObj.color});
          $('#txt1').css('background','#ffffff');
        })
        .changeData();
      }

      function updateDisplay(t){
        $('#txt1').css('background','#ffffff');
        document.getElementById('cntdiv').innerHTML='<strong>Timer Running:</strong> Count= ' + ++cnt + ' <strong>Time:</strong> ' + t;
      }

      function setA1(color) {
        console.log(color);
        google.script.run.setA1(color);
      }

      function saveData(dObj) {
        google.script.run.saveData(dObj);
      }
     console.log('My Code');
   </script>
  </body>
</html>

Current Colors: (ColorChange Sheet)

enter image description here

Data Sheet:

enter image description here

Timer Sidebar:

enter image description here

I modified an existing script to provide you with this example. So there may be other unrelated scripts in here. Feel free to modify it to fit your specific needs.


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