JS mimic block-level scope

var 5 ; var i; alert (i);When a variable is declared assigned, if it is declared again, it will not change the value after the last assignment, so the value of I is still 5, only after the value is re-assigned, such as: var 5

PHP small white Easy to appear strpos logic error

First look at the usage of Strpos: (PHP 4, PHP 5, PHP 7)Strpos - Find where the string first appearsMixed Strpos (String $haystack, mixed $needle [, int $offset = 0])Returns haystack the position where the needle exists at the beginning of the

About Phpstorm Usage Tips

Slowly update, a little accumulation, are their own problems encountered in the use ofSettings: (2016.4.15)1: note Template, Phpstorm has a very powerful comment template, can change at any time according to their own needs, and set shortcut keys,

Three.js A simple explanation of the order of textures added to the plane

//scenes scene//Camera Cameras//Renderer Render//Lightomit do not write//1. Create geometry here is the plane width 960 high 480 above the grid is 1var geometry = new three. Planegeometry (960,480,1,1);//geometry creates a texture coordinate as if

[2016-04-14] [POJ] [1258] [Agri-net]

Time: 2016-04-14-20:36:55 Thursday Title number: [2016-04-14][poj][1258][agri-net] The main idea: to find the minimum spanning tree Analysis: Direct PRIM algorithm #include #include #include using namespace std;

JS gets the Get parameter in the URL

Tag: JS gets the Get parameter in the URLMethod one; function Getlocationval (id) {var temp = Location.search.split (id+ "=") [1] | |    ""; Return Temp.indexof ("&") >=0? Temp.split ("&") [0]: temp; }Method two;;function Getargs () {var args =

URL address beautification in Yii

yii

URL address beautification: Urlmanager address Management (through the program to achieve the URL of the address beautification)For example:Original address: http://localhost/Project/app/index.php?r= Controller/methodNew address:

Web front-End Learning notes------JS Object-oriented Beginner

Basic conceptsObject: An object is a whole, providing a whole to the outside.Object-oriented: When working with objects, focus only on the functionality provided by the object, not on the details inside.Three features (class C + +): encapsulation,

Understand the core classes in the Lucene index and search process

Understanding the core classes in the indexing processThe classes you need to perform a simple index are:IndexWriter,? Directory,? Analyzer,? Document,? Field1, IndexWriterIndexWriter (write index) is the core component of the indexing process,

Fake QQ music web player implementation

Http://www.cnblogs.com/Xer-Lee/archive/2012/05/18/2508141.htmlFrom the above address I learned how to get QQ music data, I do add here.1: Get Music lyricsGet http://music.qq.com/miniportal/static/lyric/{songid%100}/{songid}.xml Replace {SongID} to

Webstrom User Manual

1, copy the current line: ctrl+alt+↓;2, open the Editor Settings window Setting:ctrl+alt+s;3, when the initial opening of the project document in the Chinese characters are all such fount small box, indicating that Webstorm currently does not

[CSS] new features in CSS3 to enhance memory

CSS3 is split into the following small modules, selectors, box models, backgrounds and borders, text effects, 2d/3d transformations, animations, multi-column layouts and user interfaces2D ConversionUse the Transform: property to set the 2D

Standard initialization CSS style sheet

Body{font-size:12px;Line-height:1.3;font-family:' Microsoft Ya Black ', tahoma,helvetica,arial, ' Arial ', Sans-serif;}body, Div, DL, DT, DD, UL, OL, Li, H1, H2, H3, H4, H5, H6, Pre, Code,form, fieldset, legend, input, textarea, p, block Quote, TH,

Angularjs Learning Notes (i) about MVVM and two-way binding

Write in front:Because the need to start to learn Ng, before listening to the great God when the introduction of NG said the hole how big, learned a while (in fact, three days), feel ng do a lot of, in the right situation you can completely use NG

JS scope chain execution context execution context stack

When I want to organize the scope of this piece of time, look at various blogs, I found that I am a little confused, embarrassed Ah.All of the following are explained in the following exampleGlobal objects: Variable a1, function fun1One: ScopeWhen

JQuery Ajax Request HttpServlet return [http/1.1 405 Method not allowed]

1. QuestionsWhen using jquery's Ajax request Servlet, the success callback function that does not enter Ajax is returned, and the browser console displays [http/1.1 405 Method not allowed].2. SolutionMost of the online surveys are explained below

JQuery Document Processing

Append AppendTothis is a paragraph.this is another paragraph. add content at the end of each P element this is a headingthis is a paragraph.this is another paragraph. add content at the end of each P element The AppendTo () method inserts the

JS oriented (based on) object programming--construction method (function)

Constructors ( methods ) IntroductionWhat is a constructor function? Before answering this question, let's take a look at a requirement: before we create a human object, we first create an object, then assign a value to his age and name attribute,

PHP implements multiple inheritance through interfaces

PHP is a single-weight inheritance. A class has only one parent class.However, multiple inheritance can be implemented through interfaces.Defines an interface in which there are methods, if the interface is implements to the class, then that class

Get to know Jsonp

First, JSON and JSONPJSON is a kind of text-based data exchange (Data description format), JSONP is an unofficial cross-domain data interaction protocol.The core of Ajax is to obtain non-page content through XMLHttpRequest, while the core of JSONP

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