Set Lookup View dynamically with JavaScript [ Dynamics CRM / 365 ]

SetLookupViewByName.js

// https://www.ashishvishwakarma.com/set-lookup-view-with-javascript-dynamics-crm-365/

function formOnLoad() {
    setLookupViewByName("parentaccountid", "Customers", true);
}

function setLookupViewByName(fieldName, viewName, asynchronous) {
    var req = new XMLHttpRequest();
    req.open("GET", Xrm.Page.context.getClientUrl() + "/api/data/v8.2/savedqueries?$select=savedqueryid&$filter=name eq '" + viewName + "'", asynchronous);
    req.setRequestHeader("OData-MaxVersion", "4.0");
    req.setRequestHeader("OData-Version", "4.0");
    req.setRequestHeader("Accept", "application/json");
    req.setRequestHeader("Content-Type", "application/json; charset=utf-8");
    req.setRequestHeader("Prefer", "odata.include-annotations=\"*\"");
    req.onreadystatechange = function () {
        if (this.readyState === 4) {
            req.onreadystatechange = null;
            if (this.status === 200) {
                var results = JSON.parse(this.response);
                if (results.value.length > 0) {
                    var savedqueryid = results.value[0]["savedqueryid"];
                    Xrm.Page.getControl(fieldName).setDefaultView(savedqueryid);
                } else {
                    Xrm.Utility.alertDialog(viewName + " view is not available.");
                }
            } else {
                Xrm.Utility.alertDialog(this.statusText);
            }
        }
    };
    req.send();
}

Find companion article here https://www.ashishvishwakarma.com/set-lookup-view-with-javascript-dynamics-crm-365/