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Focus Input Box On Load
...load?
You can just add the autofocus attribute to the input.
<input id="myinputbox" type="text" autofocus>
However, this might not be supported in all browsers, so we can use javascript.
window.onload = function() {
var input = document.getElementById("myinputbox").focus();
}
2) How...
Computed / calculated / virtual / derived columns in PostgreSQL
...
, product bigint GENERATED ALWAYS AS (int1 * int2) STORED
);
db<>fiddle here
VIRTUAL generated columns may come with one of the next iterations. (Not in Postgres 13, yet) .
Related:
Attribute notation for function call gives error
Until then, you can emulate VIRTUAL generated colu...
What is the fastest method for selecting descendant elements in jQuery?
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Method 1 and method 2 are identical with the only difference is that method 1 needs to parse the scope passed and translate it to a call to $parent.find(".child").show();.
Method 4 and Method 5 both need to parse the selector and then just call: $('...
How can I find the version of the Fedora I use?
... answered Feb 12 '09 at 9:31
David GrantDavid Grant
12.9k33 gold badges5151 silver badges6161 bronze badges
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HTML5 canvas ctx.fillText won't do line breaks?
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I'm afraid it is a limitation of Canvas' fillText. There is no multi-line support. Whats worse, there's no built-in way to measure line height, only width, making doing it yourself even harder!
A lot of people have written their own...
Generate .pem file used to set up Apple Push Notifications
...tribution section, then click "Continue" button.
Step 3: Select the App ID you want to use for your BYO app (How to Create An App ID), then click "Continue" to go to next step.
Step 4: Follow the steps "About Creating a Certificate Signing Request (CSR)" to create a Certificate Signing Request...
When should I use UNSIGNED and SIGNED INT in MySQL?
...d ranges from about -n/2 to n/2.
In this case, you have an AUTO_INCREMENT ID column, so you would not have negatives. Thus, use UNSIGNED. If you do not use UNSIGNED for the AUTO_INCREMENT column, your maximum possible value will be half as high (and the negative half of the value range would go unu...
Build and Version Numbering for Java Projects (ant, cvs, hudson)
... edited Feb 18 '16 at 12:22
Guido
40.2k2424 gold badges111111 silver badges166166 bronze badges
answered Jan 11 '10 at 4:56
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How do I directly modify a Google Chrome Extension File? (.CRX)
...er of the extension you wish to modify. ( Named according to the extension ID, to find the ID of the extension, go to chrome://extensions/). Once copied, you have to remove the _metadata folder.
From chrome://extensions in Developer mode select Load unpacked extension... and select your copied ext...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
I have an application that uses GUID as the Primary Key in almost all tables and I have read that there are issues about performance when using GUID as Primary Key. Honestly, I haven't seen any problem, but I'm about to start a new application and I still want to use the GUIDs as the Primary Keys, b...