问题
I am doing form submission and validation using jQuery and from server side I am getting a response in JSON format..
I am displaying the message in a jQuery dialog box but not able to show the message from server....
My approach:
<script type="text/javascript">
//<![CDATA[
$.validator.setDefaults({
submitHandler: function() {
var spogName = $("input#spogname").val();
var spogDis = $("input#spogdescription").val();
var dataString ='&spogName='+ spogName +'&spogDescription=' + spogDis;
$.ajax({
url: "/cpsb/spogMaster.do?method=addSpog",
type: "POST",
data: dataString,
cache: false,
success: function() {
$("#dialog-message").dialog({
resizable:false,
height:180,
modal: true,
buttons: {
Ok: function() {
$(this).dialog('close');
}
}
});
},
error: function() {
}
});
},
highlight: function(input) {
$(input).addClass("ui-state-highlight");
},
unhighlight: function(input) {
$(input).removeClass("ui-state-highlight");
}
});
$(document).ready(function() {
navMenu();
$("#spogForm").validate({
rules: {
spogname:{
required: true
}
},
messages: {
spogname: "Please enter the Spog Name"
}
});
$(":submit").button();
});
//]]>
</script>
My markup:
<div id="dialog-message" title="Spog Message" style="display:none;">
<p>
<span class="ui-icon ui-icon-circle-check" style="float:left; margin:0 7px 50px 0;"></span>
Spog added successfully!
</p>
</div>
<div id="header"><jsp:include page="../menu_v1.jsp"/></div>
<div id="mainContent">
<div id="spog_form">
<form class="cmxform" id="spogForm" method="post" action="/cpsb/spogMaster.do?method=addSpog">
<fieldset class="ui-widget ui-widget-content ui-corner-all">
<legend class="ui-widget ui-widget-header ui-corner-all">ADD SPOG</legend>
<p>
<label for="spogname">Spog Name (required)</label>
<input id="spogname" name="spogName" class="required ui-widget-content" minlength="2" />
</p>
<p>
<label for="spogdescription">Spog Description </label>
<input id="spogdescription" name="spogDescription" class="spogD ui-widget-content" />
</p>
<p>
<button class="submit" type="submit">Submit</button>
</p>
</fieldset>
</form>
</div>
</div>
</body>
json string I am getting if spog existed in database:
{"messageId":"errorMessage","message":"spog found with Name 10000 Description nuts"}
Update 1:
<script type="text/javascript">
//<![CDATA[
$.validator.setDefaults({
submitHandler: function() {
var spogName = $("input#spogname").val();
var spogDis = $("input#spogdescription").val();
$.ajax({
url: "/cpsb/spogMaster.do?method=addSpog",
type: "POST",
datatype:'json',
data: {
method:"addSpog",
spogName:spogName,
spogDescription:spogDis
},
cache: false,
success: function(data) {
if ( data.messageId === 'errorMessage' ) {
// server responded with an error, show the error placeholder
// fill in the error message, and spawn the dialog
$("#dialog-message")
.find('.success').hide().end()
.find('.error').show()
.find('.message').text( data.message ).end()
.end()
.dialog({
resizable:false,
height:180,
modal: true,
buttons: {
Ok: function() {
$(this).dialog('close');
}
}
});
} else {
// server liked it, show the success placeholder and spawn the dialog
$("#dialog-message")
.find('.error').hide().end()
.find('.success').show().end()
.dialog({
resizable:false,
height:180,
modal: true,
buttons: {
Ok: function() {
$(this).dialog('close');
}
}
});
}
}
});
},
highlight: function(input) {
$(input).addClass("ui-state-highlight");
},
unhighlight: function(input) {
$(input).removeClass("ui-state-highlight");
}
});
$(document).ready(function() {
navMenu();
$("#spogForm").validate({
rules: {
spogname:{
required: true
}
},
messages: {
spogname: "Please enter the Spog Name"
}
});
$(":submit").button();
});
//]]>
</script>
Markup:
<div id="dialog-message" title="Spog Message" style="display:none;">
<p class="success">
<span class="ui-icon ui-icon-circle-check" style="float:left; margin:0 7px 50px 0;"></span>
Spog added successfully!
</p>
<p class="error">
An error occurred while adding spog:
<span class="message"></span>
</p>
</div>
回答1:
As @Sam notes, you'll need to adjust your success callback, and you'd also need to adjust your HTML a bit.
<div id="dialog-message" title="Spog Message" style="display:none;">
<p class="success">
<span class="ui-icon ui-icon-circle-check" style="float:left; margin:0 7px 50px 0;"></span>
Spog added successfully!
</p>
<p class="error">
An error occurred while adding spog:
<span class="message">placeholder</span>
</p>
</div>
Then the JS change...
success: function(data) {
if ( data.messageId && data.messageId === 'errorMessage' ) {
// server responded with an error, show the error placeholder
// fill in the error message, and spawn the dialog
$("#dialog-message")
.find('.success').hide().end()
.find('.error').show()
.find('.message').text( data.message ).end()
.end()
.dialog({
resizable:false,
height:180,
modal: true,
buttons: {
Ok: function() {
$(this).dialog('close');
}
}
});
} else {
// server liked it, show the success placeholder and spawn the dialog
$("#dialog-message")
.find('.error').hide().end()
.find('.success').show().end()
.dialog({
resizable:false,
height:180,
modal: true,
buttons: {
Ok: function() {
$(this).dialog('close');
}
}
});
}
},
回答2:
Add the following above "success": datatype: "json",
Then change success to something like:
success: function(data) {
$("#dialog-message").append('<p>'+data.message+'</p>').dialog({
resizable:false,
height:180,
modal: true,
buttons: {
Ok: function() {
$(this).dialog('close');
}
}
});
},
Basically you need to;
a) Tell your code that your server will be returning JSON (and it should therefore eval it)
b) Do something with that JSON - e.g. pull out the message and append it to your dialog box
Please understand that the above code is only a suggestion and I haven't tested it!
来源：https://stackoverflow.com/questions/3719307/jquery-form-submission-with-sucess-and-error-message