Programmer Group

1. box model Attribute names often heard in Web design: content, padding, border, margin, CSS box pattern all have these attributes. These attributes can be understood by using the box as a metaphor, which is a common thing in everyday life, so we call it the box pattern. 2. Box model can be divided into standard box model and non-standard ...

One nauseating thing is that @angular/cli generated projects do not support IE well by default, and neither does 9/10/11. The good news is that @angular/cli generates the polyfill.ts file by default, which can be supported in a few simple steps. Step 1: Create a project with @angular/cli ng new ie-test cd ie-test ng ser ...

Description Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), design an algorithm to find the maximum profit. Example 1: Input: [7, 1, 5, 3, 6, 4] Output: 5 max. dif ...

One. Global API: APIA global is not in the constructor, but declares global variables first or defines some new functions directly on VUE. VUE has built-in global APII, such as Vue.directive. Simply put, we define new functions with API functions provided by Vue outside the constructor. Two. Vue.directive 1. Let's make a sma ...

Populating Next Right Pointers in Each Node Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } Populate each next pointer to point to its next right node. If there is no next right node, the next pointer should be set to NULL. Initially, all next po ...

Sometimes it is necessary to test the concurrency performance of a function without resorting to other tools. It is most convenient to have a concurrent request in your own development language. Simulating concurrent requests in Java is naturally very convenient, as long as you open a few more threads, it is good to initiate requests. However, ...

The effect is as follows Knowledge Points Used offsetTop property: This attribute can get the distance between the upper and outer edges of the element and the nearest location of the inner wall of the parent element. If the location is not used in the parent element, the distance between the upper and outer edges of the e ...

Last week in the web crawler course, a practice was left: download multi-page topic content from Baidu Post Bar. What I accomplished was to crawl multi-page content from a post in the post bar, which was different from the topic asked by the teacher. Moreover, after the teacher commented, I found the gap between myself and the ...

JavaScript has six types of data, which can be divided into primitive type (aka basic type) and object type (aka reference type). There are five primitive types: number, string, boolean, undefined and null. Common object types are Function, Array, Date, and regular ES6 Added Symbol Judgment of pleasure provided by JavaScript itself ...

1. Judging the current browser type function isBrower(){ var ua = navigator.userAgent.toLowerCase(); var isMiscro = ua.indexOf("micromessenger")>-1;//Wechat Browser var isChrome = ua.indexOf('chrome')>-1 && ua.indexOf('safari')>-1; //Chrome var isSafari = ua.indexOf('safari')>-1 && ua.indexOf('chrome')= ...