trigger vs click

by BraveOstrich

HTML

<script src="https://code.jquery.com/jquery-1.8.1.min.js"></script>
<script src="https://cdn.rawgit.com/MrCoder/4913b3eb9e7b4d778573/raw/9b4cf6239b7f7e5cc5e75555f73aef07a2eb1e23/Telerik.Web.UI.WebResource.js"></script>
<form method="post" id="form1">

    <div id="ctl00_MainContent_TimesheetWorkGrid_ctl00_ctl02_ctl02_EditFormControl_dpTimeSheetWorkDate_wrapper"
         class="RadPicker RadPicker_Default"
         style="display:inline-block;width:247px;vertical-align: middle;">
        <input style="visibility:hidden;display:block;float:right;margin:0 0 -1px -1px;width:1px;height:1px;overflow:hidden;border:0;padding:0;"
               id="ctl00_MainContent_TimesheetWorkGrid_ctl00_ctl02_ctl02_EditFormControl_dpTimeSheetWorkDate"
               name="ctl00$MainContent$TimesheetWorkGrid$ctl00$ctl02$ctl02$EditFormControl$dpTimeSheetWorkDate"
               type="text"
               class="rdfd_ radPreventDecorate"
               value=""
               title="Visually hidden input created for functionality purposes.">
        <table cellspacing="0"
               class="rcTable rcSingle"
               summary="Table holding date picker control for selection of dates."
               style="width:100%;">
            <caption style="display:none;">
                RadDatePicker
            </caption>
            <thead style="display:none;">
            <tr>
                <th scope="col">RadDatePicker
                </th>
            </tr>
            </thead>
            <tbody>
            <tr>
                <td class="rcInputCell"
                    style="width:100%;"><span
                        id="ctl00_MainContent_TimesheetWorkGrid_ctl00_ctl02_ctl02_EditFormControl_dpTimeSheetWorkDate_dateInput_wrapper"
                        class="riSingle RadInput RadInput_Default"
                        style="display:block;width:100%;"><input
                       ...

JavaScript

Sys.Application.add_init(function() {
    $create(AjaxControlToolkit.PopupControlBehavior, {"PopupControlID":"Panel1","Position":3,"dynamicServicePath":"/Pages/TimesheetSubmit.aspx","id":"MainContent_PopEx"}, null, null, $get("MainContent_HelpImage"));
});
Sys.Application.add_init(function() {
    $create(Telerik.Web.UI.RadNumericTextBox, {"_displayText":"","_focused":false,"_initialValueAsText":"","_postBackEventReferenceScript":"setTimeout(\"__doPostBack(\\\u0027ctl00$MainContent$TimesheetWorkGrid$ctl00$ctl02$ctl02$EditFormControl$radTxtUnits\\\u0027,\\\u0027\\\u0027)\", 0)","_skin":"Default","_validationText":"","clientStateFieldID":"ctl00_MainContent_TimesheetWorkGrid_ctl00_ctl02_ctl02_EditFormControl_radTxtUnits_ClientState","enabled":true,"incrementSettings":{InterceptArrowKeys:true,InterceptMouseWheel:true,Step:1},"numberFormat":{"DecimalDigits":10,"DecimalSeparator":".","CultureNativeDecimalSeparator":".","GroupSeparator":",","GroupSizes":3,"NegativePattern":"-n","NegativeSign":"-","PositivePattern":"n","AllowRounding":false,"KeepNotRoundedValue":false,"KeepTrailingZerosOnFocus":false,"NumericPlaceHolder":"n"},"styles":{HoveredStyle: ["width:80px;", "riTextBox riHover"],InvalidStyle: ["width:80px;", "riTextBox riError"],DisabledStyle: ["width:80px;", "riTextBox riDisabled"],FocusedStyle: ["width:80px;", "riTextBox riFocused"],EmptyMessageStyle: ["width:80px;", "riTextBox riEmpty"],ReadOnlyStyle: ["width:80px;", "riTextBox riRead"],EnabledStyle: ["width:80px;", "riTextBox riEnabled"],NegativeStyle: ["width:80px;", "riTextBox riNegative"]}}, null, null, $get("ctl00_MainContent_TimesheetWorkGrid_ctl00_ctl02_ctl02_EditFormControl_radTxtUnits"));
});
Sys.Application.add_init(function() {
    $create(Telerik.Web.UI.RadDateInput,...