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Remove all classes that begin with a certain string

I have a div with id="a" that may have any number of classes attached to it, from several groups. Each group has a specific prefix. In the javascript, I don't know which class from the group is on the div. I want to be able to clear all classes with a given prefix and then add a new one. If I want...
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In Android, how do I set margins in dp programmatically?

... is your parent layout ex. <linearlayout><relativelayout><gridlayout> and you are working with grid layout. then, you need to use relativelayout.layoutparams – Sruit A.Suk Jun 15 '15 at 22:52 ...
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how to release localhost from Error: listen EADDRINUSE

...than Ctrl+C to shut down after using npm start. – David Mason May 11 '13 at 23:43 Your npm start script might be more ...
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Call an activity method from a fragment

...ayout xml YourFragmentClass fragment = (YourFragmentClass)fm.findFragmentById(R.id.your_fragment_id); fragment.yourPublicMethod(); If you added fragment via code and used a tag string when you added your fragment, use findFragmentByTag instead: YourFragmentClass fragment = (YourFragmentClass)fm.f...
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How to replace DOM element in place using Javascript?

...t;html> <head> </head> <body> <div> <a id="myAnchor" href="http://www.stackoverflow.com">StackOverflow</a> </div> <script type="text/JavaScript"> var myAnchor = document.getElementById("myAnchor"); var mySpan = document.createElement("sp...
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Find objects between two dates MongoDB

I've been playing around storing tweets inside mongodb, each object looks like this: 14 Answers ...
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Stop an input field in a form from being submitted

...could insert input fields without "name" attribute: <input type="text" id="in-between" /> Or you could simply remove them once the form is submitted (in jQuery): $("form").submit(function() { $(this).children('#in-between').remove(); }); ...
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How to make HTML input tag only accept numerical values?

...ue. The input is not part of a form. Hence it doesn't get submitted, so validating during submission is not an option. I want the user to be unable to type in any characters other than numbers. ...
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Date query with ISODate in mongodb doesn't seem to work

..."2012-01-01T15:00:00.000Z"}}) you'll get error: error: { "$err" : "invalid operator: $date", "code" : 10068 } Try this: db.mycollection.find({ "dt" : {"$gte": new Date("2013-10-01T00:00:00.000Z")} }) or (following comments by @user3805045): db.mycollection.find({ "dt" : {"$gte": ISO...
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Search for all occurrences of a string in a mysql database [duplicate]

...l in a database. I want to search all tables and all fields. But I have no idea where to start or if it's even possible. 17...