My SharePoint Technical Experience

Please use below code to populate people picker in SharePoint online, <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script type="text/javascript"> ExecuteOrDelayUntilScriptLoaded(function () { setTimeout(function () { SetUserFieldValue('AuthorName'); }, 1000); }, 'clientpeoplepicker.js'); //Set PeoplePicker Value function SetUserFieldValue(fieldName) { try{ var userAccountName = _spPageContextInfo.userLoginName; //PeoplePicker Object var peoplePicker = $("div[title='" + fieldName + "']"); //PeoplePicker ID var peoplePickerTopId = peoplePicker.attr('id'); //People PickerEditor var peoplePickerEditor = $("input[title='" + fieldName + "']"); //Set Value to Editor peoplePickerEditor.val(userAccountName); //Get Client PeoplePicker Dict var peoplePickerObject = SPClientPeoplePicke