Here we will discuss how to resolve Unable to get property getEnumertor of undefined or null reference issue in jsom SharePoint 2013.
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Issue:
As part of my project I need to retrieve or read the lookup field value using ECMA script block in SharePoint 2013. When I try to do it I got the below error message.
Issue:
I was trying to set the lookup value with the below code:
var strTxtFiled = “”;
var ObjLstEnum = this.allItems.getEnumerator();
while(ObjLstEnum.moveNext())
{
var objCrrItem = ObjLstEnum.get_current();
strTxtFiled += objCrrItem.get_item(‘Title’) + ‘-‘ +objCrrItem.get_item(‘CompanyName’).Value + ‘\n’;
}
Note: This works for a normal field but for a Lookup Field it will not work.
Solution to resolve Unable to get property getEnumertor of undefined or null reference error:
We must have to read the lookup field value with get_lookupValue() method.
The code snippet will be like as below:
strTxtFiled += objCrrItem.get_item(‘Title’) + ‘-‘ +objCrrItem.get_item(‘CompanyName’).get_lookupValue() + ‘\n’;
The complete code will be like as below:
function fnGetLkpValue()
{
var objClntContext = new SP.ClientContext.get_current();
var objWeb = objClntContext.get_web();
var ObjLst = objWeb.get_lists().getByTitle(“Car Inventory”);
var query = SP.CamlQuery.createAllItemsQuery();
allItems =ObjLst.getItems(query);
objClntContext.load(allItems, “Include(Title,CompanyName)”);
objClntContext.executeQueryAsync(Function.createDelegate(this, this.fnSccGetVal), Function.createDelegate(this, this.fnFailGetVal));
}
function fnSccGetVal() {
var strTxtFiled = “”;
var ObjLstEnum = this.allItems.getEnumerator();
while(ObjLstEnum.moveNext())
{
var objCrrItem = ObjLstEnum.get_current();
strTxtFiled += objCrrItem.get_item(‘Title’) + ‘-‘ +objCrrItem.get_item(‘CompanyName’).get_lookupValue() + ‘\n’;
}
alert(strTxtFiled);
}
function fnFailGetVal(sender, args) {
alert(“fnFailGetVal. Message:” + args.get_message());
}
Little background / prerequisites to execute this script:
-> Create 2 lists
-> Primary List
-> Car Inventory
-> Create lookup field from car inventory list to primary list
With this code operation completed successfully.
Hope this helps!!!!
