text that matches, the function automatically resets the Regexpobject.lastindex property to 0. var reg3 =/foo/g;//at this time regex.lastindex=0reg3.test (' foo '); Return true//at this time regex.lastindex=3reg3.test (' Xxxfoo '); or return true//so we use the test () method to verify that a string is exactly matched, be sure to add the ^ and $ symbols. Note 2 (say you may not believe the series)://When we call the Regexpobj.test () method without arguments, it is equivalent to executing regex
java.The learning cycle of the front end, at least the entry cycle, is much easier than the backend language.Give me a chestnut, a friend of mine, a girl. Want to do technology, ask me to learn what language to find work, I began to recommend her to learn Java, she went to training for half a year, gave up. She said that Java is too difficult, Jdk,jar package, operating environment, IDE development tools,
streamline CSS. One of my previous articles on front-end deployment, the Ant+yui Compressor address is: The http://www.haorooms.com/post/ant_yuicom gadget also has the Ant usage:/http www.haorooms.com/tools/ant_book/Obfuscation is another method that can be used for source code optimization. This approach is more complex and confusing than streamlining and is more prone to problems. In a survey of the top
I will share with you some experiences on restructuring the JS front-end framework. If you are interested, don't miss it. After all, it's an experience. Let's get started.
Refactoring is actually not a major action. The main function to be implemented is to re-divide the existing JS Code and decouple the existing modules. Then I plan to divide the existing program into modules and repackage it into a namesp
The front-end JS and CSS class library is changing, in today's introduction, we will carefully select 15 excellent JS/CSS class library, I hope you will find it helpful in the development process ~
Core UIA set of UI class libraries based on BOOTSTRAP4, Coreui is an Administrative template for admin, providing a highly customized solution to create control templates and platforms. There are several di
Foreword we have been refactoring the front-end code of the project recently and have also referred to the best practices of various front-end code to make the front-end HTML, CSS, and Javacript code more standard-compliant and be
jquery:novice to ninja ("jquery from Rookie to Ninja (2nd edition) ") This, the framework of the book, often a primer is enough, because the update is too fast, Later research and study can only rely on the Internet.
in-depth: Unlike CSS, JS is a real programming language, so deep research on him is a long-term process, CSS in-depth more inclined to the skills/craftsmen, and JS more biased design/architecture/art, I recommend the following several in-depth JS from different aspects of the
the function, either use a parameter or use a local variable to find it on the AO.See two examples:The second question:Built-in objects and methodsAll things in JavaScript are objects: strings, numbers, arrays, dates, and so on. In JavaScript, objects are data that owns properties and methods.We have learned about the basic data types, the number object in JavaScript
This is the network programming in the computer JavaScript class of high-quality pre-sale recommendation " JavaScript jquery Interactive Web front-end development ". Content IntroductionYou are welcome to choose a more efficient way to learn JavaScript and jquery.Are you a
The scenario is that the page has an ajax request, and the json data returned by the server is large, generally about 10 MB. To save server traffic and bandwidth, the backend php needs to compress json data and transmit it to the front end. The front-end javascript will deco
streamline CSS. One of my previous articles on front-end deployment, the Ant+yui Compressor address is: The http://www.haorooms.com/post/ant_yuicom gadget also has the Ant usage:/http www.haorooms.com/tools/ant_book/Obfuscation is another method that can be used for source code optimization. This approach is more complex and confusing than streamlining and is more prone to problems. In a survey of the top
Currently, data visualization has become a very important part of the field of data science. The data generated in different network systems need to be properly visualized for better presentation to the user for reading and analysis.For any organization, the ability to fully capture data, visualize data, and analyze data can largely help to understand the underlying causes of data, so that the right decisions are made accordingly.For front-
Preface
I have been refactoring the front-end code of the project recently and have also referred to the best practices of various front-end code to make front-end HTML, CSS, and JavaScript
. Use CSS Sprite technology to centralize small background images or icons to reduce page HTTP requests, but note that you must draw a reference line in the corresponding sprite PSD source map and save it to the IMG directory. Annotation Specification 1. HTML Comment: Note format 2. CSS Comments: note Format/* Here is the comment */;3. JavaScript comments, single-line comments using '//Here is a single-line comment ', multiline comments using/* There
JavaScript File loading
Managing JavaScript code in your browser is a tricky problem because code execution blocks browsers, such as drawing the interface. Each time you encounter a placing the JS file at the bottom of the page
Place all The JS file before the script is run
To package JS files, the less the page Use non-blocking downloads to add defer properties to data access Four ways to access
In
(This article also published in my public number "dotnet daily Essence article", Welcome to the right QR code to pay attention to. )Preface: Now that the JavaScript front-end framework is emerging, especially when angular into 2.x, how do we respond? Today's recommended domestic technical experts Xufei's article "post-angular times two or three things" can give u
constructor;The advantage of using prototypes is that you can have all object instances share the properties and methods that it contains;That is, instead of defining object information (Properties/methods) in the constructor, you can add the information directly to the prototype;function Foo (n) { this.name = n;} # Foo's prototype Foo.prototype = { ' sayname ': function () { console.log (this.name) }}obj1 = new Foo (' we '); O Bj1.sayname () Obj2 = new Foo (' Wee ');Specific re
of the many, front-end optimization knowledge is deep, only in-depth understanding, will be surprised at the front end need to grasp the knowledge is so much, of course, the invisible will give people pressure | | Dynamic. Far away, but still want to recommend two blog about front
Web Front-end performance optimization Tutorial: streamline JavaScript to remove duplicate scripts
This is the seventh article in the Web Front-end performance optimization series. It focuses on streamlining Javascript code and r
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