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How to check 'undefined' value in jQuery

... One of my problems was: if you are doing something like this ("#myId"), make sure what do you really need: a. typeof ("#myId")=== "undefined" b. Or: typeof ("#myId").val() === "undefined" – Alberici Dec 26 '14 at 22:54 ...
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Can you call ko.applyBindings to bind a partial view?

...lement to use as the root. This would let you do something like: <div id="one"> <input data-bind="value: name" /> </div> <div id="two"> <input data-bind="value: name" /> </div> <script type="text/javascript"> var viewModelA = { name: ko.observ...
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What is the Git equivalent for revision number?

We use SVN at work, but for my personal projects I decided to use Git. So I installed Git yesterday, and I wonder what is the revision number equivalent in Git . ...
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How do I disable a jquery-ui draggable?

... To temporarily disable the draggable behavior use: $('#item-id').draggable( "disable" ) To remove the draggable behavior permanently use: $('#item-id').draggable( "destroy" ) share | ...
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How to set a default value with Html.TextBoxFor?

...e Html.TextBoxFor method, my first guess was to try the following which did not work: 12 Answers ...
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MongoDB: How to update multiple documents with a single command?

... didn't worked db.userActivity.find({ 'appId' : 1234, 'status' : 1}).update({ $set: { 'status': 1 } }); 2017-06-05T17:47:10.038+0530 E QUERY [thread1] TypeError: db.userActivity.find(...).update is not a function : ...
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Show pop-ups the most elegant way

... that the most elegant approach is a dedicated service to which we can provide a partial (HTML) template to be displayed in a modal. When we think about it modals are kind of AngularJS routes but just displayed in modal popup. The AngularUI bootstrap project (http://angular-ui.github.com/bootstra...
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Appropriate datatype for holding percent values?

...The OP showed 2 decimal places so I assumed that 99.99% and 100.00% are valid values. If you want percents with 0 decimal places, then you can use decimal(3,2) to store them as fractions or a tinyint if you are going to store whole numbers. – Thomas Apr 14 '18 ...
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jQuery: Test if checkbox is NOT checked

...ou want to iterate over checked elements use the parent element $("#parentId").find("checkbox").each(function(){ if ($(this).prop('checked')==true){ //do something } }); More info: This works well because all checkboxes have a property checked which stores the actual state of th...
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What are commit-ish and tree-ish in Git?

...he Short Answer (TL;DR) Here's a complete list of commit-ish and tree-ish identifiers (from the Git revisions documentation): ---------------------------------------------------------------------- | Commit-ish/Tree-ish | Examples -----------------------------------------------...