Web front-End Basics: Common cross-domain processing

One, one-way cross-domain1.JSONP (JSON with padding), mainly use the cross-domain capability of 2.IMG label requests, primarily for statistical data3. Access to data using Window.name, because the window.name property does not change because of

Deep copy and shallow copy in JS

For a string type, a shallow copy is a copy of the value, for the object, a shallow copy is a copy of the object address, and does not open up a new stack, that is, the result of the copy is two objects to the same address, modify one of the

How do I finish learning JSON in 1 hours?

W3school↑↑↑ Learn this, 1 hours is enough. Here is an excerpt:code Example 1:123 Create a JSON object in JavaScript 4 56Name: Jname">7Age: Jage">8Address: Jstreet">9Phone: Jphone">Ten One A at - -code Example 2:123 create objects with JSON strings

HTML5 using SVG steps

To create an SVG file:To introduce SVG in HTML:HTML5 using SVG steps

Vue installs the SCSS, and the global introduction

When writing the CSS style of vue, I feel that we need CSS preprocessor to make CSS more concise, more adaptable, more readable, easier to maintain the code, so the Vue-cli scaffold uses SCSS. Everyone who writes knows that it is troublesome to

AngularJs $mdDialog and $uibmodal bullets off value

$mdDialog Take the Bullet box with a click button:$scope. Btn=function ($event, Row) {var dscope = $scope. $new (True);Dscope.row = row;//New New one $scope, bring the current value to the box, the page can be directly bound to the receipt, JS with

AJAX (ii): HTTP header information

Each HTTP request and response is accompanied by header information, some of which are useful to the developer, and some pages are of no useBy default, the XHR request is sent along with the following header informationAccept: The content type that

The attributes and styles of jquery. Val ()

One of the. Val () methods in jquery is primarily used to manipulate the values of form elements, such as input, select, and textarea.The. Val () method. val () No parameter, gets the current of the first element in the collection of matching

Installing the Phpredis Extension

1. Installing RedisDownload: wget https://github.com/nicolasff/phpredis/archive/2.2.4.tar.gzUpload phpredis-2.2.4.tar.gz to/usr/local/src directoryCD/USR/LOCAL/SRC #进入软件包存放目录Tar zxvf phpredis-2.2.4.tar.gz #解压CD phpredis-2.2.4 #进入安装目录/usr/local/php5.6

[JSOI2011] Sub-specialty

discriptionJyy led participated in a number of ACM/ICPC competitions, brought back a lot of native products, to be divided into the laboratory students. Jyy want to know, how many different ways to divide these specialties into n classmates? Of

Steps for Ajax Refactoring

Tag: Log time () callback load Ted loader his instantiation initializationAjax refactoring can be broadly divided into the following 33 steps.Create a separate JS file with the name Ajaxrequest.js, and write the code needed to refactor Ajax in the

Use and management of HTTP sessions

Use and management of HTTP sessionsI. Introduction of the SESSIONHTTP is a stateless protocol that requires adding some additional data in the HTTP request to keep track of the customer's state to differentiate between different users.A session

Input tag handles multiple file uploads

html>>>meta CharSet="UTF-8"> meta name= "Viewport" content= "Width=device-width, initial-scale=1, Maximum-scale =1, minimum-scale=1, User-scalable=no, Minimal-ui "> meta name= "apple-mobile-web-app-capable" content= "Yes"> meta name=

LNMP Architecture-Introduction and PHP installation (unlike lamp)

fpm

LNMP Architecture-Introduction and PHP installation (unlike lamp) Brief introduction:lnmp=linux+nginx+mysql+phpand lamp installation PHP method is different, need to open PHP-FPM service, need to add PHP-FPM users Empty the previously

js--lexical structure

1. About case:JS is case-sensitive and HTML is case-insensitive.Example: JS must write the onclick,the HTML can write the onclick can also be written as onclick.2. identifiers :Identifiers are used to name variables and functions, or to mark the

Use CSS border to make a triangular formula gift

In order to facilitate the use of border to do the triangle, omit that tedious thinking triangle facing problem, I made a small formula, divided into two, one is the ordinary triangle, one is for the right angle triangle, the formula is as

. Net Core modifies the default boot port

Today inadvertently found a change, because long time did not see the. NET core project, found that the project started the default port is not 5000, remember very clearly, the first time that is the. NET core 1.x version, each boot will default to 5

The difference between a JSON object and a JSON string

JSON objectSometimes the two concepts are confused when doing the project, especially when using SPRINGMVC, the background @requestbody accepts a JSON-formatted string, which must be a string.Let's start with the JSON object, which begins with the

The socket server sends messages to the specified client.

The socket server sends messages to the specified client. I. Requirements The requirement is as follows. How does the server send messages to a specified client when multiple clients connect to the server. 2. Solutions Core Idea: on the server side,

Detailed explanation of tar compression and decompression commands in Linux

Detailed explanation of tar compression and decompression commands in LinuxDetailed description of tar compression and decompression commands in Linux Tar -C: Create a compressed file-X: Extract-T: View content-R: append an object to the end of the

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