Cannot read property ‘preventDefault’ of undefined in javascript error

In Console I got following error using e.preventDefault() method I used e as a function parameter

  function function1(e){

1533 Uncaught TypeError: Cannot read property ‘preventDefault’ of undefined.

Called function1 like

    <a href="#none" onclick="function1()">Click Me</a> 


I remove event from function and invoke function in this way:

<button class="btn btn-primary" runat="server" id="btnSave" type="submit"                                           
          onserverclick="btnSave_OnServerClick"  onclick="return 

In JavaScript:

function jsFunction() {
        if ($('#form1').bootstrapValidator('validate').has('.has-error').length) {
            alert('SOMETHING WRONG');             
        } else {
            alert('EVERYTHING IS GOOD');
            __doPostBack('<%=btnSave.UniqueID%>', '');
        return false;

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