Here's a simple example of creating and editable html version of your spreadsheet. You could deploy this as a web app if you wish. I developed it as a modeless dialog. To edit any cell just make the change and hit enter. The back ground with turn yellow and after the spreadsheet is updated the background color returns to white. There are no other controls.
I imagine that you could add many additional enhancements but this covers some of the basics including client to server and server back to client communications.
The google script code:
function htmlSpreadsheet()
{
var br='<br />';
var s='';
var hdrRows=1;
var ss=SpreadsheetApp.getActiveSpreadsheet();
var sht=ss.getActiveSheet();
var rng=sht.getDataRange();
var rngA=rng.getValues();
s+='<table width="100%">';
for(var i=0;i<rngA.length;i++)
{
s+='<tr>';
for(var j=0;j<rngA[i].length;j++)
{
if(i<hdrRows)
{
s+='<th id="cell' + i + j + '">' + '<input id="txt' + i + j + '" type="text" value="' + rngA[i][j] + '" size="8" onChange="updateSS(' + i + ',' + j + ');" />' + '</th>';
}
else
{
s+='<td id="cell' + i + j + '">' + '<input id="txt' + i + j + '" type="text" value="' + rngA[i][j] + '" size="8" onChange="updateSS(' + i + ',' + j + ');" />' + '</th>';
}
}
s+='</tr>';
}
s+='</table>';
//s+='<div id="success"></div>';
s+='</body></html>';
var userInterface=HtmlService.createHtmlOutputFromFile('htmlss').setWidth(1000).setHeight(450);
userInterface.append(s);
SpreadsheetApp.getUi().showModelessDialog(userInterface, 'Spreadsheet Data for ' + ss.getName() + ' Sheet: ' + sht.getName());
}
function updateSpreadsheet(i,j,value)
{
var ss=SpreadsheetApp.getActiveSpreadsheet();
var sht=ss.getActiveSheet();
var rng=sht.getDataRange();
var rngA=rng.getValues();
rngA[i][j]=value;
rng.setValues(rngA);
var data = {'message':'Cell[' + Number(i + 1) + '][' + Number(j + 1) + '] Has been updated', 'ridx': i, 'cidx': j};
return data;
}
The htmlss.html file:
<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
$(function() {
});
function updateSS(i,j)
{
var str='#txt' + String(i) + String(j);
var value=$(str).val();
$(str).css('background-color','#ffff00');
google.script.run
.withSuccessHandler(successHandler)
.updateSpreadsheet(i,j,value)
}
function successHandler(data)
{
//$('#success').text(data.message);
$('#txt' + data.ridx + data.cidx).css('background-color','#ffffff');
}
console.log('My Code');
</script>
<style>
th{text-align:left}
</style>
</head>
<body>
<div id="success"></div>