Confirmation dialog while saving Dataverse record

The below code help to make use of the save event functions to better use and achieve the need.

function onSave(executionContext) {
    var depth = sessionStorage.getItem("depth");
    if(depth == null || depth == "0"){
        console.log("Depth - "+ depth);
        sessionStorage.setItem("depth", "0");
        var formContext = executionContext.getFormContext();
        executionContext.getEventArgs().preventDefault();
        var tagMetaData = [];
        const tagNames = [];
        var xml = formContext.data.entity.getDataXml();
        var node = (new DOMParser()).parseFromString(xml, "text/xml").documentElement;
        var nodes = node.querySelectorAll("*");
        if(nodes.length > 0){
            for(let i = 0; i < nodes.length; i++) {
                if(nodes[i].getAttribute("type") == '1'){
                    tagMetaData.push({type:"1",name:nodes[i].tagName});
                    tagNames.push("_"+nodes[i].tagName+"_value");
                }else{
                    tagMetaData.push({type:"2",name:nodes[i].tagName});
                    tagNames.push(nodes[i].tagName);
                }            
            }
            var selectFields = tagNames.join();
            console.log(selectFields);
            
            var confirmStrings = { text:"Are you sure you want to save the record?", title:"Confirmation Dialog" };
            var confirmOptions = { height: 200, width: 450 };
            Xrm.Navigation.openConfirmDialog(confirmStrings, confirmOptions).then(
            function (success) {    
                if (success.confirmed){
                    sessionStorage.setItem("depth", "1");
                    formContext.data.save().then(function success(result){
                        sessionStorage.setItem("depth", "0");
                    },
                    function error(result){
                        sessionStorage.setItem("depth", "0");
                    });
                }
                else{
                    Xrm.WebApi.online.retrieveRecord(formContext.data.entity.getEntityName(), formContext.data.entity.getId(), "?$select="+ selectFields).then(
                        function success(result) {
                            for(let a = 0; a < tagMetaData.length; a++){
                                if(tagMetaData[a].type == "1"){
                                    var fieldFormattedValue = result["_"+tagMetaData[a].name+"_value@OData.Community.Display.V1.FormattedValue"];
                                    var fieldLogicalName = result["_"+tagMetaData[a].name+"_value@Microsoft.Dynamics.CRM.lookuplogicalname"];
                                    var fieldValue = result["_"+tagMetaData[a].name+"_value"];

                                    var lookupData = new Array();
                                    var lookupItem = new Object();
                                    lookupItem.id = fieldValue;
                                    lookupItem.name = fieldFormattedValue;
                                    lookupItem.entityType = fieldLogicalName;
                                    lookupData[0] = lookupItem;
                                    formContext.getAttribute(tagMetaData[a].name).setValue(lookupData);
                                }else{
                                    var fieldValue = result[tagMetaData[a].name];
                                    formContext.getAttribute(tagMetaData[a].name).setValue(fieldValue);
                                }
                            }
                            formContext.data.refresh(false);
                        },
                        function(error) {
                            Xrm.Utility.alertDialog(error.message);
                        }
                    );
                }
            });
        }
    }
}