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Edit Page Suddenly Not Working

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I have a details page where users edit their time sheets entries. It shows the original times entered and has fields for new times. It was working fine, but now it is not updating. They click the update button, but it doesn't record any of their new data. I looked at the page with the Developer View on Chrome, and it shows this error: "Uncaught TypeError: Cannot set property 'onmouseover' of null" I will paste the footer script below. Please help me figure out what's wrong with it!


document.getElementById('Mod0EditRecord').onmouseover = function(){

var date = document.getElementById('EditRecordDate').value;
if(date == "")
date = "1/1/2011";
var hour = document.getElementById('cbParamVirtual1').value;
if(hour =="")
var minute = document.getElementById('cbParamVirtual2').value;
if(minute == "")
minute = "00";
var ampm = document.getElementById('cbParamVirtual3').value;

document.getElementById('EditRecordStart_Time').value = date + " " + hour + ":" + minute + " " + ampm;

var hour2 = document.getElementById('cbParamVirtual4').value;

if(hour2 =="")


var minute2 = document.getElementById('cbParamVirtual5').value;

if(minute2 == "")

minute2 = "00";

var ampm2 = document.getElementById('cbParamVirtual6').value;

document.getElementById('EditRecordEnd_Time').value = date + " " + hour2 + ":" + minute2 + " " + ampm2;
var start= new Date(document.getElementById('EditRecordStart_Time').value);
var end = new Date(document.getElementById('EditRecordEnd_Time').value);
var timeDiff = end - start;
var hh = Math.floor(timeDiff / 1000 / 60 / 60);

timeDiff -= hh * 1000 * 60 * 60;

var mm = Math.floor(timeDiff / 1000 / 60);

var totalmin= (mm+ (hh * 60)) ;
document.getElementById('EditRecordHours').value =  (totalmin/60).toFixed(2);



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Hi @ababcock,

I think the issue caused by the invalid way how you try to reference the Update button.

document.getElementById('Mod0EditRecord').onmouseover = ...

Caspio has recently introduced some changes in the way how ID of the element is generated.

Unique postfix has been added to each element of a Datapage.


You can use CSS selectors to get the element by partial name e.g. 


or by using class to refer to the Update button e.g.


Hope this helps.



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