Programmer Think

Interview topics: What is the idea of converting ES6 code to ES5 code? Examples: // Before conversion const fn = () => { console.log('The Lion of the Front End'); }; // After conversion "use strict"; var fn = function fn() { console.log('The Lion of the Front End'); }; Answer analysis: ...

Original Link: http://www.cnblogs.com/jellochen/p/The-Dynamic-Feature-in-CSharp.html As we all know, C#is a static language just like Java.Before C# 4.0, you want to and Dynamic Language Convenient interoperability (such as Python, Java ...

Create arrays Use literal grammar and Array() constructors. Literal Using array literals is the easiest way to create arrays. You can use all the elements in square brackets to separate them. var s = [];//Empty array var s = [1,1,1,1,1]//An array with five values. Although javascript arrays are ordered lists of data in other languages, ...

From here... Preface call and apply exist to change the context in which a function runs, that is, to change the direction of this inside the function.call and apply work exactly the same, but they accept parameters differently. Method Definition applyThe Function.apply(obj,args) method can take two parameters: obj: This object will replac ...

JavaScript strings are used to store and process text. So when you write JS code, she always goes hand in hand, when you process user's input data, when you read or set the attributes of DOM objects, when you operate Cookie, when you convert different Date s, and so on, countless; and her many API s, there are always some impulses that people d ...

1,join() join() Method is used to convert all elements in an array into a string. Elements are delimited by a specified delimiter.arrayObject.join(separator)The parameter represents the separator and is optional. Default comma if no parameters are passed. Note that the return value is a string, not an array.Note: This method does not change the ...

Template syntax Text: <span>Message: {{ msg }}</span> v-once One-time interpolation, when the data changes, the contents of the interpolation will not be updated <span v-once>This will not change: {{MSG}}</span> v-html directive <p>Using mustaches: {{ rawHtml }}</p> <p>Using v-html direct ...

Class I Introduction Traditional JavaScript programs use functions and prototype-based inheritance to create reusable components. Starting with ECMAScript 2015, or ECMAScript 6, JavaScript programmers will be able to use the object-oriented approach of classes. But TypeScript allows you to use these features now, without waiting for the next ...

create object Although Object constructors or object literals can be used to create a single object, these methods have obvious drawbacks: creating many objects with the same interface can generate a lot of duplicate code. To solve this problem, people began to use a variant of the factory model. Factory mode Factory pattern is a well-known des ...

You can't go far in JavaScript without learning how to handle objects.They are the basis for almost every aspect of the JavaScript programming language.In fact, learning how to create objects may be the first thing you start learning. The object is a key/value pair.The most common way to create an object is to use curly brackets {} and add attr ...