Remove duplicate list items from SharePoint REST call result using JavaScript

May 17, 2017 / Kannan / 0 Comments

The following code snippet show how to remove duplicate list items in the JSON result of a SharePoint REST call using JavaScript.

Function Definition:

function RemoveDuplicateItems(items, propertyName) {
    var result = [];
    if (items.length > 0) {
        $.each(items, function (index, item) {
            if ($.inArray(item[propertyName], result) == -1) {
                result.push(item);
            }
        });
    }
    return result;
}

Function Usage:
In the below code, assumption is that, the REST call returns data.d.results and the column for which duplicate items need to be removed is Title

var items = data.d.results;
items = RemoveDuplicateItems(items, 'Title');

 

Pass multiple parameters in SetTimeout JavaScript Function

May 17, 2017 / Kannan / 0 Comments

Following is a code snippet which show how to pass multiple parameters in JavaScript’s SetTimeout() function.

setTimeout(function () {
    CustomFunction(param1, param2, param3, param4, param5);
}, 1000);

JSLink URL Tokens in SharePoint

May 17, 2017 / Kannan / 0 Comments

Following are some of the JSLink URL Tokens I have come across in SharePoint.

  • ~site – reference to the current SharePoint site (or “Web”)
  • ~sitecollection – reference to the current SharePoint site collection (or “Site”)
  • ~layouts – version specific reference to the web application Layouts folder (so it will automatically swap out /_layouts/14 or /_layouts/15 for you)
  • ~sitecollectionlayouts – reference to the layouts folder in the current site collection (e.g. /sites/team/_layouts/15)
  • ~sitelayouts – reference to the layouts folder in the current site (e.g. /sites/teams/subsite/_layouts/15)

Few Examples:

~sitecollection/_catalogs/masterpage/
~site/siteassets/
~layouts/reputation.js

Source: https://www.martinhatch.com/2013/08/jslink-and-display-templates-part-1.html