Analysis of the difference between button and submit in jQuery ajax_jquery

Copy code The code is as follows: $(document).ready(function(){ $("#submit").click(function(){ $.post("sendPwd.php",{QQnum:$("#QQnum" ).val(),psw:$("#psw").val()},function(data){ $("#aaa").html(data); },"html" ; .php receives the passed value through $_POST, and then echoes a piece of data. However, the returned value cannot be displayed. The reason is here: Copy code The code is as follows: The type of the submit button is submit, and nothing happens after clicking it. Because I accidentally discovered that the result came out once I clicked it, and then changed back, I found it strange. I checked online and found that most of the buttons were set to button type, so after changing it to button, the problem was solved. Button What is the difference between button and submit? Submit is mainly used to submit the form. It is a special button that performs the submission action. The button is mainly operated with JavaScript and is itself a button. This is the fundamental difference. If you want to use submit, verification needs to return false. I think it is more convenient to set it as a button.