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POUnexpected multiple instance creation in jstree delegate
 

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  1. POUnexpected multiple instance creation in jstree delegate
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    <pre><code>var json_string=$.parseJSON(document.getElementById("json_db").innerHTML); $(function () { $("#folder_tree").jstree({ contextmenu: {items: customMenu}, "json_data" : {data:json_string}, "plugins" : [ "themes", "json_data", "ui", "contextmenu" ], }); }); function customMenu(node) { var items = { }; } $('#folder_tree').delegate('a', 'contextmenu', function (e) { idn = $(this).parent().attr("id"); if(idn) pool_control(idn,e); //sendMsg(idn) }); </code></pre> <p>Hi, I'm getting something really weird in jsTree. The above code shows tree creation and delegating the right click event. sendMsg(idn) sends an AJAX request to another page. pool_control(idn,e) uses the event to show a form next to the clicked node. After the form is filled, it calls sendMsg.</p> <p>The script works perfectly when I call sendMsg directly in the delegated event handler(instead of pool_control). However, when I call it through pool_control, this happens: Each pool_control is called, the no. of Ajax requests sent increases by one. The contents of the request appears to be the same, but I have no idea why the no. of ajax requests increases. This doesn't happen when I call sendMsg directly.</p> <p>What's happening? How do I fix this?</p> <p>pool_control and sendMsg:</p> <pre><code>function pool_control(id,ev) { $("#pool_count").css("left",ev.pageX); $("#pool_count").css("top",ev.pageY); $("#pool_count").css("visibility","visible"); $("#poolbutton").click(function() { $('#pool_count').css('visibility','hidden'); sendMsg(id); }); $("#poolcancel").click(function() { $('#pool_count').css('visibility','hidden'); }); } function sendMsg(a,ev) { $('#pool_count').css('visibility','hidden'); var factid = $("#factid").val(); var floor = $("#floor").val(); var ceiling = $("#ceiling").val(); var pool_count = $('#poolsize').val(); var userid = document.getElementById("userid").innerHTML; $.ajax( { type: "POST", url: "generator.php", data: {what:a,name:factid,author:userid,floor:floor,ceiling:ceiling,pool_count:pool_count}, async: false, cache: false, timeout:50000, }); } </code></pre> <p>This is a long-polling webpage. sendMsg sends a user-made change in the tree and doesn't care about the response. Another function waitForMsg is the long-polling ajax request. When it sees the change in db due to sendMsg, it calls the jstree() function again to remake the tree. When I make a change in the tree, sendMsg sends 1 request first time, 2 requests seconds time, 3 requests third time, so on. I'm pretty sure nothing's wrong in that function, but here it is, just in case</p> <pre><code>function waitForMsg() { var lastupdate = document.getElementById("lastupdate").innerHTML; var msg; $.ajax({ type: "POST", url: "oracle.php", data: {lastupdate:lastupdate}, async: true, cache: false, timeout:20000, success: function(data) { msg = data.split("@"); document.getElementById("lastupdate").innerHTML=msg[0]; document.getElementById("json_db").innerHTML=msg[1]; initPage(); //a &lt;body onready&gt; function which creates the tree again setTimeout('waitForMsg()', 200 ); }, error: function(XMLHttpRequest, textStatus, errorThrown){ setTimeout('waitForMsg()', 1000); } }); } </code></pre>
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    1. COTry adding e.stopImmediatePropagation() in the delegate block
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      1. USMahn
    2. COHrm... It really didn't do anything to the increasing ajax requests. It only started making the default windows context menu start appearing.
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    3. COOkay, then you've probably got to show the code behind pool_control
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      1. USMahn
 

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