Field Level Override

fieldleveoverride.js

(function () {

    var myFormContext = {
        Templates: {
            Fields: {
                LookUp: {
                    "View": function (ctx) {
                        debugger
                        console.log('Hitted');
                        console.log(ctx);
                    }
                }
            }
        },
        ListTemplateType: 100
    };

    SPClientTemplates.TemplateManager.RegisterTemplateOverrides(myFormContext);

})();