rj48 jack

Scenario 1: Father.php is defined as follows: Copy CodeThe code is as follows: $jack = 1000; ?> Children.php is defined as follows: Require ("father.php"); $jack = 123; echo $jack. " /n "; ?> PHP children.php The run output is 123. If $jack=123 is commented out, it runs at 1000, and if $

One, MongoDB command说明：Mongodb命令是区分大小写的，使用的命名规则是驼峰命名法。 对于database和collection无需主动创建，在插入数据时，如果database和collection不存在则会自动创建。Common commandsHelp commandWith this command you can see some of the most basic commands,Use commandFor example, command "Use Demodb", create demodb without worrying that DEMODB will not be created, and automatically create a database collection when using the use DEMODB command to create the first Demodb.Inserting dataInsert a document using the command "Db.collectionName.in

Tags: style blog http color io ar using strong SPChapter II BASIC commands One, MongoDB command说明：Mongodb命令是区分大小写的，使用的命名规则是驼峰命名法。 对于database和collection无需主动创建，在插入数据时，如果database和collection不存在则会自动创建。Common commandsHelp commandWith this command you can see some of the most basic commands,Use commandFor example, command "Use Demodb", create demodb without worrying that DEMODB will not be created, and automatically create a database collection when using the use DEMODB command to create the fir

One, MongoDB command说明：Mongodb命令是区分大小写的，使用的命名规则是驼峰命名法。 对于database和collection无需主动创建，在插入数据时，如果database和collection不存在则会自动创建。Common commandsHelp commandWith this command you can see some of the most basic commands,Use commandFor example, command "Use Demodb", create demodb without worrying that DEMODB will not be created, and automatically create a database collection when using the use DEMODB command to create the first Demodb.Inserting dataInsert a document using the command "Db.collectionName.in

. prototype = {// Mother prototype age: 18, home: ['beijing', 'shanghai']}; Person. prototype = new Mother (); // The prototype of Person is Mother // You can view it using chrome debugging tools, provides the _ proto _ interface to view the prototype var p1 = new Person ('jack'); // p1: 'jack'; _ proto __: 18, ['beijing', 'shanghai'] var p2 = new Person ('mark'); // p2: 'mark'; _ proto __: 18, ['beijing ',

Tags: system.in red cannot null get col completely decided firstChapter II Basic command one, MongoDB command说明：Mongodb命令是区分大小写的，使用的命名规则是驼峰命名法。 对于database和collection无需主动创建，在插入数据时，如果database和collection不存在则会自动创建。Common commandsHelp commandWith this command you can see some of the most basic commands,Use commandFor example, command "Use Demodb", create demodb without worrying that DEMODB will not be created, and automatically create a database collection when using the use DEMODB command to create

Which of the following javascript interview questions have you done?1. -------------------------------------------------- copy the code var fun = function () {this. name = 'Peter '; return {name: 'jack'};} var p = new fun (); copy the code to ask p. name is: a: 'Peter ', B: 'jack', c: null, d: undefined 2. -------------------------------------------------- copy the code var fun = function () {this. name = '

Nima!That's enough for you too! Don ' t bb! Show me the code!function person (name) {this.name = name;} function mother () {}mother.prototype = {//mother's prototype age:18, home: [' Beijing ', ' Shanghai ']}; Person.prototype = new mother (); The person's prototype is mother//with the Chrome Debugging tool, which provides a __proto__ interface to view the prototype var p1 = new Person (' Jack '); P1: ' Jack