Sharepoint Pre Save Lookup Validation

Question

I'm new to SharePoint, so will appreciate any help here.

I'm trying to run two checks before a user can submit a form, be it on a new or edit form. The first check is the value of a field is >0 and if yes, check for an attachment else trigger an error message. This one I've been able to figure out, and I've included the code below.

I need to also Check if the value in a lookup drop down column is 000 (default value), and trigger an error message if it is, so I can force the user to update the column. JavaScript that would normally work on a regular drop-down field does not seem to work here.

Code 1: Checks if a field is greater than 0 and if yes, an attachment is required.

function PreSaveAction() {

    var SuspiciousActivityAmountValue= document.getElementById("Suspicious_x0020_Activity_x0020__2395d776-7e2a-4c21-b298-86e337a4780d_$CurrencyField").value;

    var atch = document.getElementById("idAttachmentsTable");

    if(SuspiciousActivityAmountValue > "0"){

        if (atch == null || atch.rows.length == 0)

        {

            alert("The Case Summary file appears to be missing! Please attach the document before saving the Security Notice.");

            return false ;

        }else {

            return true;

        }

    }else{

        return true;

    }

}

Code 2: Check if the value in a lookup drop down column is 000 (default value), and trigger an error message if it is. Here's the script I was trying to use to get the second check to work.

function PreSaveAction() {

    var BranchValue= document.getElementById("Branch_e29ef8cb-6b73-4418-83e1-6bb5cdbdba25_$LookupField").value;

    if(BranchValue == "000"){

            alert("Branch cannot be 000. Please select the appropriate branch number from the list");

            return false ;

        }else {

            return true;

    }

}

Appreciate any help I can get.

Edit: Here's what i tried by merging both codes, but the second check does not occur though the first one does. What do you think I'm doing wrong?

function PreSaveAction() {

var SuspiciousActivityAmountValue= document.getElementById("Suspicious_x0020_Activity_x0020__2395d776-7e2a-4c21-b298-86e337a4780d_$CurrencyField").value;

var atch = document.getElementById("idAttachmentsTable");

if(SuspiciousActivityAmountValue > "0"){

    if (atch == null || atch.rows.length == 0)

    {

        alert("The Case Summary file appears to be missing! Please attach the document before saving the Security Notice.");

        return false ;

    }else {

        return true;

    }

}else{

    return true;

var BranchDropDown= document.getElementById("Branch_de9394fa-0532-4926-b180-6ffe6d4703a8_$LookupField");

var BranchValue =BranchDropDown.options[BranchDropDown.selectedIndex].text if(BranchValue == "000"){

        alert("Branch cannot be 000. Please select the appropriate branch number from the list");

        return false ;

    }else {

        return true;

    }

}

}

Answer 1

For validation to the lookup dropdown selected text, please modify the Script as below:

function PreSaveAction()
{
   var BranchDropDown= document.getElementById("Branch_e29ef8cb-6b73-4418-83e1-6bb5cdbdba25_$LookupField");
   var BranchValue =BranchDropDown.options[BranchDropDown.selectedIndex].text
    if(BranchValue == "000"){

            alert("Branch cannot be 000. Please select the appropriate branch number from the list");

            return false ;

        }else {

            return true;

    }
}

Please note, this should be the text, not value for the drop down list.

Answer 2

Try using below code:

function PreSaveAction() {
    var BranchValue = document.querySelector("select[title^='Branch'][id$='$LookupField']").value;

    //Check what is the default value of lookup drop-down by inspecting element and use that value in below condition (In my case it is "0")
    if(BranchValue == "000") {
        alert("Branch cannot be 000. Please select the appropriate branch number from the list");
        return false ;
    } else {
        return true;
    }
}

Update from comments:

If .value does not work for you then you can use one of the other options available to get the selected option from dropdown. Check below references for the same.

1. Get selected value in dropdown list using JavaScript

2. jQuery Get Selected Option From Dropdown.