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Getting an empty JQuery object
... the following code I set up a change handler on a select box to show and hide some follow up questions based on the value of the selection.
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Rails detect if request was AJAX
...TTP_X_REQUESTED_WITH'] =~ /XMLHttpRequest/ => 0
The docs:
http://apidock.com/rails/v4.2.1/ActionDispatch/Request/xml_http_request%3F
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How to convert a private key to an RSA private key?
...f OpenSSL say BEGIN PRIVATE KEY because they contain the private key + an OID that identifies the key type (this is known as PKCS8 format). To get the old style key (known as either PKCS1 or traditional OpenSSL format) you can do this:
openssl rsa -in server.key -out server_new.key
Alternately, i...
How to implement Rate It feature in Android App
I am developing an Android App. In which everything is working right. My app is ready to launch. But there I need to implement one more feature. I need to display a popup which contains
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Make a link in the Android browser start up my app?
...me. Something along the lines of:
<intent-filter>
<data android:scheme="anton" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" /&...
PostgreSQL: Can you create an index in the CREATE TABLE definition?
... answered Jun 4 '11 at 22:04
ridrid
51.1k2424 gold badges135135 silver badges176176 bronze badges
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What are the differences between the BLOB and TEXT datatypes in MySQL?
...BLOB or TEXT and store large amounts of data in xml files relative to user id based folders.
– Darcey
Jul 24 '12 at 10:16
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Is SecureRandom thread safe?
...application. The ThreadLocalRandom class could be used as a pattern to provide a solution that supports SecureRandom.
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jQuery append() vs appendChild()
...ppend.
You can pass multiple arguments.
var elm = document.getElementById('div1');
elm.append(document.createElement('p'),document.createElement('span'),document.createElement('div'));
console.log(elm.innerHTML);
<div id="div1"></div>
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How to detect page zoom level in all modern browsers?
...body,r = body.getBoundingClientRect(); return (r.left-r.right)/body.offsetWidth; (thanks to this example or this answer)
FF3.5 ONLY: screen.width / media query screen width (see below) (takes advantage of the fact that screen.width uses device pixels but MQ width uses CSS pixels--thanks to Quirksmod...