Another Space @jetaime03-blog - Tumblr Blog

interior home garden

http://www.ebay.com/cln/ebayhomeeditor/growth-potential/275805990018

Graphic

https://blog.aboutamazon.com/innovation/coloring-outside-the-lines?token=GW&utm_campaign=innov&utm_content=tt_A&utm_medium=editorial&utm_source=gateway&utm_term=gw04202018

#graphic

How to create pure react SVG maps with topojson and d3-geo

https://medium.com/@zimrick/how-to-create-pure-react-svg-maps-with-topojson-and-d3-geo-e4a6b6848a98

#datavisualization

What Video Games Have to Teach Us About Data Visualization

https://medium.com/@Elijah_Meeks/what-video-games-have-to-teach-us-about-data-visualization-87c25ff7c62f

#datavisualization

https://viblo.asia/p/giup-website-cua-ban-nhanh-len-gap-n-lan-voi-nginx-aWj532qol6m

Falsy value, Double exclamation mark

This converts a value to a boolean and ensures a boolean type.

"foo" = "foo" !"foo" = false !!"foo" = true

If foo.bar is passed through, then it may not be 0 but some other falsy value. See the following truth table:

Truth Table for javascript

'' == '0' // false 0 == '' // true 0 == '0' // true false == 'false' // false false == '0' // true false == undefined // false false == null // false null == undefined // true " \t\r\n" == 0 // true

Source: Doug Crockford

Javascript also gets really weird when it comes to NaN values. And this is the only case I can think of off the top of my head where !! would behave differently to ===.

NaN === NaN //false !!NaN === !!NaN //true // !!NaN is false

http://stackoverflow.com/questions/9284664/double-exclamation-points

#javascript #double exclamation mark #falsy value

When should I use require() and when to use define()?

From the require.js source code (line 1902):

/** * The function that handles definitions of modules. Differs from * require() in that a string for the module should be the first argument, * and the function to execute after dependencies are loaded should * return a value to define the module corresponding to the first argument's * name. */

The define() function accepts two optional parameters (a string that represent a module ID and an array of required modules) and one required parameter (a factory method).

The return of the factory method MUST return the implementation for your module (in the same way that the Module Pattern does).

The require() function doesn't have to return the implementation of a new module.

Using define() you are asking something like "run the function that I am passing as a parameter and assign whatever returns to the ID that I am passing but, before, check that these dependencies are loaded".

Using require() you are saying something like "the function that I pass has the following dependencies, check that these dependencies are loaded before running it".

The require() function is where you use your defined modules, in order to be sure that the modules are defined, but you are not defining new modules there.

http://stackoverflow.com/questions/9507606/when-should-i-use-require-and-when-to-use-define

#javascript #requirejs

Install godef

https://github.com/rogpeppe/godef/issues/4

#golang

I've been studying some JS libraries lately that were written by people who really knew what they were doing, and I keep seeing this pattern, and I can't find information about it. I read the docs ...

#javascript

Golang : How to verify uploaded file is image or allowed file types

golang upload image

#golang #upload-image

move image within a div or certain limited area when mousedown - posted in Javascript Help: Hi, I found this code from a website, the point that I am trying to make here is to drag the image within a certain div, for example a 300 x 500px box, and the image can not be dragged outside this box. The current thing that this script allows me to do is to drag it all over the page, but not within a box that is limited to size:

Design Tool ngoinhaaothun.com

#javascript #move-image

How can I check if a given string is a valid URL address? My knowledge of regular expressions is basic and doesn't allow me to choose from the hundreds of regular expressions I've already seen on ...

Regex to verify URLs

#regex url

tab-navigation

http://jakub-g.github.io/accessibility/onclick/

#tab-navigation

I'm using PhantomJS v1.4.1 to load some web pages. I don't have access to their server-side, I just getting links pointing to them. I'm using obsolete version of Phantom because I need to support A...

phantomjs wait for full page loading

https://newspaint.wordpress.com/2013/04/05/waiting-for-page-to-load-in-phantomjs/

#phantomjs wait full page #load full page

My goal is to execute PhantomJS by using: // adding $op and $er for debugging purposes exec('phantomjs script.js', $op, $er); print_r($op); echo $er; And then inside script.js, I plan to use mul...

Phantomjs recursive function call. Using multiple page.open in Single Script

#Phantomjs #recursive call #function call #page.open

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