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Editorial Team
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Asked: 2026-06-14T16:14:27+00:00

Folks I am working on the Editinplace functionality and while running I get this

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Folks I am working on the Editinplace functionality and while running I get this error on the chrome console Uncaught SyntaxError: Unexpected token < I am doing this with the node.js snippet as follows

case '/':
res.writeHead(302,{'location':'http://localhost/editinplace/index.html'});
res.end();
break;
case '/save':
console.log("called");

    console.log("Inside called");
    res.write('_testcb(\'{"message": "Hello world!"}\')');
res.writeHead(302,{'location':'http://localhost/editinplace/save.html'});

res.end();
break;

The code for the index.html is as follows

<script type="text/javascript">
$(document).ready(function(){
setClickable();
});
function setClickable() {
$('#editInPlace').click(function() {
var textarea = '<div><textarea rows="10" cols="60">'+$(this).html()+'</textarea>';
var button = '<div><input type="button" value="SAVE" class="saveButton" /> OR <input type="button" value="CANCEL"class="cancelButton" /></div></div>';
var revert = $(this).html();
$(this).after(textarea+button).remove();
$('.saveButton').click(function(){saveChanges(this, false);});
$('.cancelButton').click(function(){saveChanges(this, revert);});
})
.mouseover(function() {
$(this).addClass("editable");
})
.mouseout(function() {
$(this).removeClass("editable");
});
};//end of function setClickable
function saveChanges(obj, cancel) {
if(!cancel) {
var t = $(obj).parent().siblings(0).val();
var data=t;
 $.ajax({
        url: 'http://localhost:9090/save',
        type:"GET",
        dataType: "jsonp",
        jsonpCallback: "_testcb",
        cache: true,
        timeout: 1000,
        data:{data:JSON.stringify(data)},
        success: function(data) {
        },
        error: function(jqXHR, textStatus, errorThrown) {
        }
    });
}
else {
var t = cancel;
}
$(obj).parent().parent().after('<div id="editInPlace">'+t+'</div>').remove() ;
}
</script>
</head>
<body>
<div id="editInPlace">Nilesh</div>
</body>

The save.html is a simple text enclosed in <pre>tags.And the error is shown to be in save.html line 1.Thankx for your efforts.

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1 Answer

  1. Editorial Team

    OK, so here’s what happens:

    • browser loads index.html
    • user edits the field and clicks save
    • saveChanges makes an AJAX GET request to /save
    • Your server code sends an HTTP response with a 302 status code and a jsonp body
    • I think that the browser is transparently handling the 302 status code and ignoring the body
    • Thus your jquery code is expecting your javascript from the response body of /save, but it’s really getting the HTML from /save.html. That’s where the syntax error happens, when jquery tries to evaluate that HTML as javascript because you told it the dataType was jsonp.

    See also this question about browsers handling redirects automatically

    The solution is you need to send a 200 response code so jquery can do the jsonp thing and then after that you can change window.location to /save.html if you like.

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