First, console methods and properties let's introduce the main purposes of each method. In general, the method we use to enter information is mainly used in the following four 1, Console.log for output general Information 2, Console.info for the output of informational information 3, Console.error for output error message 4, Console.warn for output warning information 5, console.debug for output debug information Two, robots.txt file should be placed in the root directory of the Web site. Obots.txt is a plain text file in which the site manager can declare a part of the site that does not want to be accessed by robots, or the specified search engine only contains the specified content. When a search robot (some called a search spider) accesses a site, it first checks to see if there is a robots.txt in the root directory of the site, and if so, the search robot will follow the contents of the file to determine the scope of the access, and if the file does not exist, the search robot will crawl along the link. In addition, the robots.txt must be placed at the root of a site, and the filenames must all be lowercase. Here is the robots.txt file in Verycms: user-agent: * Disallow:/admin/admin file Disallow:/require/program file Disallow:/attachment/Annex D Isallow:/images/picture Disallow:/data/database file Disallow:/template/template file Disallow:/css/style sheet file Disallow:/lang/encoded file Dis Allow:/script/script file
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