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CSS: page beautification and layout control Concept: Cascading Style Sheets Cascade: multiple styles can act on the same html element and take effect at the same time Benefits: PowerfulSeparating content presentation from style control Reduce coupling. decoupling Make division of labor and cooperation easierImprove development eff ...

preface Speaking of console.log debugging, needless to say, it is very easy to use. It has helped us solve many bugs during development. We can often see these pieces of console debugging in the development environment. However, the console information code is not allowed in the production environment. Are you still manually deleting one by on ...

1. Introduction to webpack 1.1 static module bundler for modern javascript applications Static: file resources 1.2 in addition to merging code, you can also translate and compress code less/sass -> css less/sass -> css HTML / CSS / JS - > compact merge 2. Preparations before using webpack 2.1 webpack depends on Node environm ...

What is this pointing to? No matter where you use this, it eventually points to an object; Where this is used and which object it will point to depends on the location of the function call. In short, remember one sentence: Which object calls the function and which object this in the function points to. this point in different scenes ...

Hello, I'm hottie. I'll organize jQuery learning tutorials for you today.   catalogue 1, Introduction to jQuery 2, Usage of jQuery 3, jQuery selector 4, Selection set filtering 5, Selection set transfer 6, Get and set element content 7, Get and set element properties 8, jQuery event 9, Event agent 10, JavaScript object 11, json ...

1. Data type 1.1 classification 1. Basic (value) type typeBrief descriptionStringArbitrary stringNumberArbitrary numberbooleantrue/falseundefinedundefinednullnull 2. Object (Reference) type typeType descriptionObjectAny objectFunctionA special object (executable)ArrayA special object (numeric subscript, internal data is ordered) var a ; ...

Index of this series Linear table basis Linked listqueueStack Tree structure foundation Binary treeHeap and priority queueJoint search set Sorting algorithm Quick sortMerge sortCardinality / topological sorting Search Search Algorithm Binary search To be continued Binary search principle Binary search is an algorithm applied to ...

Cross domain What is cross domain? Cross domain, that is, non homologous policy requests. This means that the browser cannot execute scripts from other websites. It is caused by the browser's homology policy and is a security restriction imposed by the browser. The so-called homology means that the domain name, protocol and port are the same ...

1.join() Receives a parameter as a delimiter, defaults to a comma, returns a string separated by each item of the array var arr = [1,2,3,] console.log(arr.join(".")) //1.2.3 2.split() Receives one or two parameters, the first representing a "separator" or a "regular expression" separated from the position specified by ...

Auxiliary submission tool Because you need to use the commit tool to assist in submitting information npm install commitizen -g Then you need to install the node environment first use Under project directory # npm init is required first commitizen init cz-conventional-changelog --save --save-exact Submit using git cz The specification ...