Best way to validate a SharePoint Enhanced Rich text field using JQuery.

Recently I got a requirement to create a new Enhanced Rich text field in my existing application. We also need to validate that its not blank. So at first I know, it will be bit complex due to any obvious selector unavailability for Enhanced Rich Text Field in SharePoint. I searched a lot and found no. of suggestion but nothing seems very logical to me and also did not work for me. Then I have written below script to deal with it.

//Rich Text Field Validation Code

var RichtTxtContent = $('nobr:contains("Rich Text Field Title")').closest('tr').find('div[id$="TextField_inplacerte"]').text();
if( RichtTxtContent.length === 1 ||  RichtTxtContent.length === 0)
{
alert("Please enter  Richt Text Content .");
SetRemoveStyleOnFocus($('nobr:contains("Rich Text Field Title")').closest('tr').find('div[id$="TextField_inplacerte"]'));
return false;

I have just selected whole Row with the Rich Text Field Title, then found out a div with the text its always append it into this div client Id. Refer below screen shot to see the ID.

Then we need to check length as by default its set to 1. We need to compare with both 1 and 0.


Here is a function which will make sure that field is highlighted with focus whenever its blank. You can write your own classes to highlight it.

function SetRemoveStyleOnFocus(inputField)
{
$(inputField).focus(function() {
    $(this).addClass("focus");
});
$(inputField).blur(function() {
    $(this).removeClass("focus");
    });

    $(inputField).focus();
}

We just need to call this piece of code on Pre Save event of a SharePoint OOB New\Edit form or any other event as per need.

Validate no. of characters and their type entered into any input field using Java Script.

Here are I am writing an example how can we make sure that entered input in a filed should be only a 6 Digit number. You can modify it to according to your requirements:

var InputFieldValue = $("#InputFiledID").val();//Bit Jquery :) You can use java script too.

if( InputFieldValue!= '')
    {
var digits = "0123456789";
        var temp;
        if (InputFieldValue.length > 6){
        alert("Entered value cannot be more than 6 Digit Numbers ");
        return false;
        }
        else if(InputFieldValue.length < 6){
        alert("Entered value cannot be less than 6 Digit Numbers ");
        return false;
        }
        else {
for (var i = 0; i < InputFieldValue.length ; i++) {
        temp = InputFieldValue.substring(i, i + 1);
        if (digits.indexOf(temp) == -1) {
        alert("Entered value cannot contain any Character.");
        return false;
        }
        }
        }
     }

On the above code we have provided a string of characters which we want to permit as inputs. In this case we want to validate against numerals.  Then we select each character of input field value and try to find it into our format string, if it does not contain we return vale as false.

This can be extend for checking against any format.

Here is an example how can we extend it. For an input in this format "xx-xx-xx" where 'x' needs to be a number:

if( InputFieldValue != '')
{
var digits = "0123456789";
        var temp;
        if (InputFieldValue.length > 8){
        alert("Entered Value cannot be more than 6 Digit Numbers ");
                return false;
                }
                else if(InputFieldValue.length < 8)
                {
                alert("Entered Value cannot be less than 6 Digit Numbers ");
                return false;
                }
                else {
for (var i = 0; i < InputFieldValue.length; i++) {
            temp =InputFieldValue.substring(i, i + 1);
            if(i==2|| i==5)
            {
            if(temp!='-')
            {
            alert("Entered Value be in xx-xx-xx format. Does not conation - in current values.");
                   return false;
                   }
            }
            else if (digits.indexOf(temp) == -1) {
                alert("Entered Value cannot contain any Character ");
                return false;
            }
            }
             }
            }

On the above code, we are making sure that on 3rd and 5th position its always contain '-'.

Hope it helps someone.