Programmer Think

1.json rules Reading guide module: development history: At the beginning of the 21st century, Douglas Crockford looked for a simple data exchange format, Can exchange data between servers. At that time, the common data exchange language was XML, But Douglas Crockford thinks that XML generation and parsing are too troublesome, So he propose ...

The knowledge of promise can be divided into bronze, silver, gold, platinum, diamond, Xingyao and king. Maybe the king has played too much. Which stage have you been to? About promise bronze You have used promise to solve asynchronous programming and know how to call then() and catch() to handle the callback function. Basic Usage const pro ...

vue3.0 version preface Study vue3 0 can learn and consolidate vue2 0 knowledge points are helpful for 3.0. Come on, Sao Nian! vue: Beta It can be seen that the Vue 3.0 beta version is a project series, including the suite and webpack plug-ins we need in the development process. This article will take you to quickly build a project fra ...

preface summary Zotero is an open-source document management software. When using Endnote, the author encountered an unhandled bug (after the Seafile cloud disk synchronization failed, the three local computers and the cloud disk involved in the synchronization lost all the paper item information and could not be recovered). At the same time, ...

1,jQuery.merge() method The $. merge() function is used to merge the contents of two arrays into the first array. * $* merge( first, second ) $(function () { var arr = $.merge( [0,1,2], [2,3,4] ); $("span").text(arr.join(", ")); }) 2,jQuery.inArray() method The $. inArray() function is used to find the specified value in the array and r ...

It's mainly the boss's js inheritance This is a transporter Prototype, constructor, instance The first one he said was prototype chain inheritance: First, we talk about the prototype, constructor and instance, as well as the relationship between them 1. Prototype: a simple object, which is used to realize the attribute inheritance of the ob ...

1, Array prototype. forEach() No return value This method traverses each item in the array and executes the given function once for each element of the array. The forEach method cannot modify array items, but the original array can be modified through the index of the array. Sample code const arr = [1,2,3] arr.forEach((value,index,array) ...

The handsome guy went to the library to paddle. When he entered the door, he was shocked by the big screen at the door of the library. I would also ha ha ha, so I took it down! As a result, when writing a blog, the handsome guy found that the name of the handsome guy happened to be on the photo. The handsome guy shouted: "handsome (wonderf ...

Reprint: http://book.odoomommy.com/chapter3/README11.html Chapter 11 abstract fields Abstract field is the abstract basis of field components used in all views. These are common components in views, especially forms and tree lists. The main function of the field component is to render the visual elements of the current value of the field in ...

prelude Learning a new knowledge should have some purpose, or understand the relevant background, and learn something with questions, at least not so painful. (don't tell me that learning is happy. Where does learning bring happiness (￣ ￣ ￣) (￣ ￣ ￣) Let's first look at a scenario, a very common and simple requirement, which dynamically ...