| 1 | <!doctype html>
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| 2 | <html lang="en">
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| 3 | <head>
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| 4 | <title>Datepicker Visual Test : Datepicker ticket #4071</title>
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| 5 | <link rel="stylesheet" href="../visual.css" type="text/css" />
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| 6 | <link rel="stylesheet" href="../../../themes/base/ui.all.css" type="text/css">
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| 7 | <script type="text/javascript" src="../../../jquery-1.4.1.js"></script>
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| 8 | <script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
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| 9 | <script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
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| 10 | <script type="text/javascript" src="../../../ui/jquery.ui.datepicker.js"></script>
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| 11 | <script type="text/javascript">
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| 12 |
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| 13 | function ValidatorHookupEvent(control, eventType, functionPrefix) {
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| 14 | var ev;
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| 15 | eval("ev = control." + eventType + ";");
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| 16 | if (typeof(ev) == "function") {
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| 17 | ev = ev.toString();
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| 18 | ev = ev.substring(ev.indexOf("{") + 1, ev.lastIndexOf("}"));
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| 19 | }
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| 20 | else {
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| 21 | ev = "";
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| 22 | }
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| 23 | var func;
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| 24 | if (navigator.appName.toLowerCase().indexOf('explorer') > -1) {
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| 25 | func = new Function(functionPrefix + " " + ev);
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| 26 | }
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| 27 | else {
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| 28 | func = new Function("event", functionPrefix + " " + ev);
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| 29 | }
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| 30 | eval("control." + eventType + " = func;");
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| 31 | }
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| 32 |
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| 33 | function HandleChange(event, boundBy) {
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| 34 | var boundBy = boundBy ? boundBy : '$(control).change(function(event){...})';
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| 35 | var type = event.type,
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| 36 | srcOrTarget = event.srcElement ? 'srcElement' : 'target',
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| 37 | tagName = event[srcOrTarget].tagName;
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| 38 | alert('[' + boundBy + ']\nevent.type: ' + type + '\nevent.' + srcOrTarget + '.tagName: ' + tagName);
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| 39 | }
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| 40 |
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| 41 | $(function() {
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| 42 | var control = $('#myInput')[0], eventType="onchange";
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| 43 |
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| 44 | $(control).datepicker();
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| 45 | $(control).change(HandleChange);
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| 46 | $('#changeButton').click(function() {
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| 47 | $(control).change();
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| 48 | });
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| 49 | $('#triggerButton').click(function() {
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| 50 | $(control).trigger('change');
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| 51 | });
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| 52 | $('#triggerHandlerButton').click(function() {
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| 53 | $(control).triggerHandler('change');
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| 54 | });
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| 55 | $('#fireEventButton').click(function() {
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| 56 | control.fireEvent('onchange');
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| 57 | });
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| 58 | if (!control.fireEvent) { $('#fireEventButton').remove(); }
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| 59 |
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| 60 | ValidatorHookupEvent(control, eventType, "HandleChange(event, 'eval(control.onchange = func)')");
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| 61 |
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| 62 | });
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| 63 | </script>
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| 64 | <style type="text/css">
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| 65 | button { display: block; }
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| 66 | </style>
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| 67 | </head>
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| 68 | <body>
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| 69 |
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| 70 | <h1 class="ui-widget-header"><a href="http://dev.jqueryui.com/ticket/4071">#4071 - 'length' is null or not an object</a></h1>
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| 71 |
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| 72 | <h2>Summary</h2>
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| 73 | In Internet Explorer, when a event such as click on one element causes a change event on another element to trigger programmatically, any change event handler that was bound to that second element through onchange gets the click event instead of the change event.
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| 74 |
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| 75 | <h2>Steps to reproduce</h2>
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| 76 | <p>
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| 77 | To demonstrate the issue, do one of the following:
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| 78 | </p>
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| 79 | <ul>
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| 80 | <li>Click the input to open the Datepicker, then select a date</li>
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| 81 | <li>Or press a number in the text field and blur</li>
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| 82 | <li>Or click a button below</li>
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| 83 | </ul>
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| 84 | <p>
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| 85 | Each will trigger change on the text input. The input has a handler bound in three different ways. Notice the difference when pressing a number in the input and bluring versus either selecting a date or pressing one of the first three buttons. In Internet Explorer, when the issue is present, 2 out of the three event objects are of type 'click' instead of 'change' and have the wrong corresponding srcElement/target when the datepicker or one of the first three buttons are clicked.
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| 86 | </p>
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| 87 |
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| 88 | <input type="text" id="myInput" onchange="HandleChange(event, '<input onchange=\'...\' />')" />
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| 89 | <button id="changeButton">Click to trigger change event via $(control).change();</button>
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| 90 | <button id="triggerButton">Click to trigger change event via $(control).trigger('change');</button>
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| 91 | <button id="triggerHandlerButton">Click to trigger change event via $(control).triggerHandler('change');</button>
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| 92 | <button id="fireEventButton">Click to fire change event via control.fireEvent('onchange');</button>
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| 93 |
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| 94 | </body>
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| 95 | </html>
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