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POjquery - .submit() function not working inside ajax() function
 

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  1. POjquery - .submit() function not working inside ajax() function
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    <p>I am new to ajax. The requirement is fairly simple. When the submit button is pressed, the javascript would do a asynchronous request, which the sever-side would validate the user input. If the input is alright, the form would do standard submit, otherwise have a error message.</p> <p>So, here is my form:</p> <pre><code>&lt;form id="form" action="dosomething.jsp" method="post"&gt; &lt;input type="text" name="name"&gt; &lt;input type="text" name="email"&gt; &lt;input id="submit" type="submit" value="Go"&gt; &lt;/form&gt; </code></pre> <p>here is my javascript:</p> <pre><code>$(document).ready(function() { $("#form").submit(function(event) { event.preventDefault(); var form = $(this); var button = $("#submit"); button.attr("disabled", "disabled"); $.ajax({ url: "ValidateServlet", type: "post", data: form.serialize(), success: function(msg) { if(msg== ""){ form.unbind("submit"); form.submit(); } else{ alert(msg); button.removeAttr("disabled"); } } }); }); }); </code></pre> <p>The code works fine, except one function <code>form.submit();</code> not working. I try this outside the ajax() function, it would submit, so I think there is problem about the scope, but I can't fix that.</p> <p>Let me clarify the <code>form.unbind();</code>. Let say I delete the line with <code>form.submit();</code>, in other words, there is only <code>form.unbind();</code> for the success case <code>(if(msg = ""))</code>. When I press the submit button first time, the form would do a asynchronous request to validate as normal. If the input is correct, (namely <code>msg = ""</code>), when I press the submit button again, it would do the standard submit, since I have unbinded the submit event. Therefore, the problem is not on that <code>form.unbind();</code>, at least in my concern.</p> <p>The servlet code:</p> <pre><code>public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{ PrintWriter out = response.getWriter(); String msg = ""; String name = request.getParameter("name"); String email = request.getParameter("email"); if("".equals(name)){ msg += "&lt;li&gt;Please enter name&lt;/li&gt;" ; } if("".equals(email)){ msg += "&lt;li&gt;Please enter email&lt;/li&gt;" ; } if(title.length() &gt; 20 ){ msg += "&lt;li&gt;Name should be lesser than 20 character.&lt;/li&gt;" ; } if(email.length() &gt; 30){ msg += "&lt;li&gt;Title should be lesser than 30 character.&lt;/li&gt;" ; } if(! "".equals(msg)){ msg = "&lt;p&gt;Error :&lt;/p&gt;&lt;ul&gt;" + msg; msg += "&lt;/ul&gt;"; out.print(msg); } out.close(); } </code></pre>
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    1. USuser2081836
    1. USuser2081836
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    1. COwhy you are submitting form again..?? just remove `form.unbind("submit");`
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      1. POjquery - .submit() function not working inside ajax() function
      1. USDipesh Parmar
    2. COYou could change the event to run on button click and remove the `form.unbind` and it would probably work out better.
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      1. POjquery - .submit() function not working inside ajax() function
      1. UScbattlegear
    3. CO`form.unbind ` is supposed to unbind the onsubmit event, and then perform standard submit. Not sure if it works like that.
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      1. POjquery - .submit() function not working inside ajax() function
      1. USuser2081836
 

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