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How to generate unique ID with node.js
...me compelling features:
ShortId creates amazingly short non-sequential url-friendly unique
ids. Perfect for url shorteners, MongoDB and Redis ids, and any other
id users might see.
By default 7-14 url-friendly characters: A-Z, a-z, 0-9, _-
Non-sequential so they are not predictable...
Setting CSS pseudo-class rules from JavaScript
...
More specific reference URLs: - < w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleSheet > - < developer.mozilla.org/en/DOM/CSSStyleSheet/insertRule > - < developer.apple.com/library/safari/#documentation/… >
...
How to open a new tab using Selenium WebDriver?
...b = Keys.chord(Keys.CONTROL,Keys.RETURN);
driver.findElement(By.linkText("urlLink")).sendKeys(selectLinkOpeninNewTab);
The code below will open empty new Tab.
String selectLinkOpeninNewTab = Keys.chord(Keys.CONTROL,"t");
driver.findElement(By.linkText("urlLink")).sendKeys(selectLinkOpeninNewTab)...
apache redirect from non www to www
...
To remove www from your URL website use this code in your .htaccess file:
RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1$1 [R=301,L]
To force www in your website URL use this code on .htaccess
RewriteEngi...
Chrome Dev Tools: How to trace network for a link that opens a new tab?
...tributes.target.value = '_self';
}
});
window.open = function(url) {
location.href = url;
};
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How to log SQL statements in Grails
...river:
driverClassName: com.p6spy.engine.spy.P6SpyDriver
And your jdbc url:
url: jdbc:p6spy:mysql://
Configure it using spy.properties (in grails-app/conf).
driverlist=org.h2.Driver,com.mysql.jdbc.Driver
autoflush=true
appender=com.p6spy.engine.spy.appender.StdoutLogger
databaseDialectDate...
Check if image exists on server using JavaScript?
...
You could use something like:
function imageExists(image_url){
var http = new XMLHttpRequest();
http.open('HEAD', image_url, false);
http.send();
return http.status != 404;
}
Obviously you could use jQuery/similar to perform your HTTP request.
$.get(image_url...
How to install gem from GitHub source?
...stall a gem from its github repository (like 'edge'), or from an arbitrary URL. Very usefull for forking gems and hacking on them on multiple machines and such.
gem install specific_install
gem specific_install -l <url to a github gem>
e.g.
gem specific_install https://github.com/githubsvnclo...
How does RewriteBase work in .htaccess
...[a-z0-9\-]+)$ $1/ [NC,R=301,L]
This is a real rule I used to ensure that URLs have a trailing slash. This will convert
http://www.example.com/~new/page
to
http://www.example.com/~new/page/
By having the RewriteBase there, you make the relative path come off the RewriteBase parameter.
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How to access a preexisting collection with Mongoose?
...el.
Try something like the following, either schema-mapped:
new Schema({ url: String, text: String, id: Number},
{ collection : 'question' }); // collection name
or model mapped:
mongoose.model('Question',
new Schema({ url: String, text: String, id: Number}),
...