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    <p>To detect a <code>@</code>, you'd do something like :</p> <pre><code>$("#recommendTextArea").keyup(function (e) { if (e.which===50) { alert('you typed @'); } }); </code></pre> <p>and <code>this.value</code> get's you whatever is typed into the textarea, and you'll need a regex to get what's between <code>@</code> and the first following space, or something similar depending on how you intend to do this ?</p> <p>To get a name, you can do something like this :</p> <pre><code>var _name = false; $("#recommendTextArea").keyup(function (e) { if (_name) { $('#name').text('name : ' + this.value.substring( this.value.lastIndexOf('@') ) ) } if (e.which === 50) { _name = true; } if (e.which === 32) { _name = false; } }); </code></pre> <p><a href="http://jsfiddle.net/F5Hmj/3/" rel="nofollow"><strong>FIDDLE</strong></a></p> <p>This is just a quick demo, building something that always works and accounts for every possible outcome will be a lot more work than this.</p> <p><strong>EDIT:</strong></p> <blockquote> <p>Most importantly what I need is the index of the'@' that the user just entered.</p> </blockquote> <p>that would be <code>this.value.lastIndexOf('@')</code></p> <p><strong>EDIT AGAIN:</strong></p> <p>To get the names typed in the textarea regardless of cursor position, number of names etc. you'll have to use a regex, here's a quick example that gets all and any names typed in, as long as they start with a @, and ends with a blank space :</p> <pre><code>$("#recommendTextArea").keyup(function (e) { var names = this.value.match(/@(.*?)\s/g); $('#name').html('names typed : &lt;br/&gt;&lt;br/&gt;' + names.join('&lt;br/&gt;')); }); </code></pre> <p><strong>FIDDLE</strong></p>
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    1. POdetect character before the cursor after keyup in textarea
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    1. COis there a way to get the index of this?
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    2. CO`this.value.lastIndexOf('@')`
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    3. COthat wouldn't work.. If I had an @ at the end and I moved the cursor to the middle of the string.. then this would failed the case
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