12.1 Using DNS module to resolve domain name/313
12.1.1 using the Resolve method to resolve a domain name to a DNS record/313
12.1.2 using the Lookup method to query the IP address/315
12.1.3 using the reverse method to reverse Resolve IP address/316
12.1.4 various error codes in the DNS module/317
12.2 Using the Punycode module to convert Punycode encoding/318
12.3 using OS module for operating system Information/320
12.4 Reading stream data row by line using the ReadLine module/323
12.4.1 creating interface Objects/323
12.4.2 the various methods and events owned by the interface object/327
12.5 using some of the practical methods provided in the Util module/335
12.6 using VM module to change script run environment/346
12.6.1 running JavaScript code in a standalone environment/346
12.6.2 creating and using a Script object/350
12.7 Custom REPL Operating Environment/352
12.8 Summary/358
node. js Authoritative Guide-other modules in node. js