ECMA script for checking active workflows for an list item

Question

Hi i am having more than 1 workflow associated with the list if there is any workflow that is active for an item then i need to prevent starting another workflow for the same item. I am using the following code to achieve the same. Can anyone please provide
me the ECMA object model equivalent for achieving the same.
    //Check for any active workflows for the document
        private void CheckForActiveWorkflows()
            // Parameters 'List' and 'ID' will be null for site workflows.
            if (!String.IsNullOrEmpty(Request.Params["List"]) && !String.IsNullOrEmpty(Request.Params["ID"]))
                this.workflowList = this.Web.Lists[new Guid(Request.Params["List"])];
                this.workflowListItem = this.workflowList.GetItemById(Convert.ToInt32(Request.Params["ID"]));
            SPWorkflowManager manager = this.Site.WorkflowManager;
            SPWorkflowCollection workflowCollection = manager.GetItemActiveWorkflows(this.workflowListItem);
            if (workflowCollection.Count > 0)
                SPUtility.TransferToErrorPage("An workflow is already running for the document. Kindly complete it before starting a new workflow");
        }

Answer 1

Hi,
According to your post, my understanding is that you wanted to use ECMA script to check active workflows for an list item.
You can use the Workflow web service "/_vti_bin/workflow.asmx"
- GetWorkflowDataForItem operation in particular.
Here is a great blog for you to take a look at:
http://jamestsai.net/Blog/post/Using-JavaScript-to-check-SharePoint-list-item-workflow-status-via-Web-Service.aspx
In addition, you can use
SPServices. For more information, please refer to:
http://sharepoint.stackexchange.com/questions/72962/is-there-a-way-to-check-if-a-workflow-is-completed-using-javascript
Best Regards,
Linda Li
Linda Li
TechNet Community Support