The most intuitive way to understand the difference between javascript constructors and ordinary functions

The most intuitive way to understand the difference between javascript constructors and ordinary functions

The way to distinguish a javascript function from a constructor or an ordinary function is to see which calling method they use. Whether a javascript constructor or a javascript ordinary function is a function, they are always functions. Their calling method determines whether they are constructors or ordinary functions. The following is the declaration of a function, which is a function, but the way it is used later determines whether it is a constructor or a normal function: function website(name,url){ this.webName = name; this.webUrl = url; } Constructor
common problem five hundred and four
Essential for keyword optimization: Baidu and Google online index query tool website

Essential for keyword optimization: Baidu and Google online index query tool website

Choosing the right keywords will help improve the search engine traffic of the blog, and you can also do half the work when optimizing keywords. When doing blog SEO, it is very difficult to select keywords for blog. I don't know how to select keywords, whether the keywords are popular or not, and I don't know whether good keywords are good or not. At this time, I can use Baidu and Google index query tools to analyze the selected keywords. Baidu Index Query Introduction: Baidu Index is a free massive data analysis service based on Baidu web search and Baidu news search, which reflects the "user attention" and "media attention" of different keywords in the past. You can find, share and mine the most valuable letters on the Internet
Company Information three hundred and sixty-two