javascript - force form submit button click with jquery -

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trying trigger submit functionality jquery. doing wrong? in theory, should work. i've tried 4 different ways though.

i have tried 

$('input#submit').trigger("click");  $( form:first ).submit();  $( form:first ).trigger("submit");  $('form#databaseactionform').submit();

nothng has worked (yet)?!

code:

<html lang="en"> <head>     <title>database management</title>     <meta http-equiv="content-type" content="text/html;charset=utf-8" />         <script src="http://code.jquery.com/jquery-3.1.0.min.js" integrity="sha256-ccuebr6csya4/9szppfrx3s49m9vuu5bgtijj06wt/s=" crossorigin="anonymous"></script>         <style>             table td { border: 1px solid black; }             table td:first-child { text-align: left; }         </style>     <script>         <!--         $(document).ready(function() {             $('#erase').click(function() {                 if (confirm("are sure want erase data database?"))                 {                     $('#buttontypepressed').val("erase");                     $('input#submit').trigger("click"); <!-- here -->                 }             });              $('#update').click(function() {                 var appid = $('#updateappid').val();                 var field = $('#fieldname').val();                 var value = $('#newvalue').val();                  if (appid == null || appid == "") {                     alert("you must enter id number of entry wish modify.");                     $('#updateappid').focus();                 }                 else if (field == null || field == "") {                     alert("you must choose field wish modify.");                     $('#fieldname').focus();                 }                 else if (value == null || value == "") {                     alert("you must choose new value wish appear in database.");                     $('#newvalue').focus();                 }                 else {                     $('#buttontypepressed').val("update");                     $('input#submit').trigger("click"); <!-- here -->                 }             });              $('#delete').click(function() {                 var appid = $('#deleteappid').val();                  if (appid == null || appid == "") {                     alert("you must enter id number of entry wish delete.");                     $('#deleteappid').focus();                 }                 else {                     $('#buttontypepressed').val("delete");                     $('input#submit').trigger("click"); <!-- here -->                 }             });         });         -->     </script> </head> <body>     <div id="container">         <from id="databaseactionform" name="databaseactionform" method="post" action="<?php echo htmlspecialchars($_server['php_self']); ?>">             <table border=0 style="margin: 50px auto; text-align: right;">                 <tr style="text-align: center; font-weight: bold; font-size: 1.5em; text-decoration: underline;">                     <th>action</th>                     <th>additional info</th>                     <th>button</th>                 </tr>                 <tr name="clear">                     <td>erase database</td>                     <td style="text-align: center;">are sure?</td>                     <td><input type="button" id="erase" name="erase" value="erase all?" /></td>                 </tr>                 <tr name="update">                     <td>update value</td>                     <td>                         entry id: <input type="text" id="updateappid" name="updateappid" placeholder="app entryid" /><br />                         field name: <input type="text" id="fieldname" name="fieldname" placeholder="field change" /><br />                         new value: <input type="text" id="newvalue" name="newvalue" placeholder="new value" /><br />                     </td>                     <td><input type="button" id="update" name="update" value="update value" /></td>                 </tr>                 <tr name="delete">                     <td>delete payment</td>                     <td>                         entry id: <input type="text" id="deleteappid" name="deleteappid" placeholder="app entryid" />                     </td>                     <td><input type="button" id="delete" name="delete" value="delete entry" /></td>                 </tr>             </table>             <input type="hidden" id="buttontypepressed" name="buttontypepressed" />             <input type="submit" id="submit" name="submit" value="submit" style="position: absolute; left: -9999px; width: 1px; height: 1px;" tabindex="-1"/>         </form>     </div> </body>

there 2 issues here, 1 typo in element name form, have from.

another name/id of submit button, should not submit override default submit property(the function) of form element

<input type="submit" id="bsubmit" name="bsubmit" value="submit" style="position: absolute; left: -9999px; width: 1px; height: 1px;" tabindex="-1" />

then use below snippet submit form

$('#databaseactionform').submit();

demo: fiddle


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