当前位置: 首页>>代码示例 >>用法及示例精选 >>正文


Node.js console.groupCollapsed()用法及代码示例


console.groupCollapsed()方法是控制台模块的内置模块,用于折叠分组的内容,直到调用console.groupEnd()方法为止。它开始折叠组,并可以使用groupEnd()方法结束。

用法:

console.groupCollapsed([label]);

参数:如上所述,此方法仅接受一个参数,如下所述:

  • 标签:您要在控制台上分组的组的标签。这是一个可选参数。

返回值:它不返回任何值。



以下示例说明了Node.js中console.groupCollapsed()方法的使用。

范例1:

index.js


// Node.js program to demonstrate the 
// console.groupCollapsed() method 
// This code example demonstrate the
// method without parameter
  
// Accessing console module 
const console = require('console'); 
  
console.log("GeeksforGeeks (Outside)")
console.log();
  
// Creating first group calling
// console.groupCollapsed() method
console.groupCollapsed();
  
// Printing First line of Group
console.log("GeeksforGeeks (1)");
  
// Printing Second line of Group
console.log("GeeksforGeeks (2)");
  
// End the group (It is used to end the 
// group for more understanding the
// group method) 
console.groupEnd();
console.log();

使用以下命令运行index.js文件:

node app1.js

输出:

GeeksforGeeks (Outside)

  GeeksforGeeks (1)
  GeeksforGeeks (2)

范例2:

index.js


// Node.js program to demonstrate the 
// console.groupCollapsed() method 
  
// This code example demonstrate the method
// with parameter and nested groups
  
// Accessing console module 
const console = require('console');
  
console.log("GeeksforGeeks ");
  
console.log("=========================");
console.log();
  
// Creating collapsed group 
console.groupCollapsed("GeeksforGeeks (main Collapsed group)");
console.log();
  
// Printing First line of collapsed group
console.log("GeeksforGeeks (Outside)");
console.log();
  
// Creating First nested collapsed group 
console.groupCollapsed("GeeksforGeeks (1st Nested group)");
console.log("GeeksforGeeks (1st line)");
console.log("Computer Science Portal (2nd line)");
  
// Ending the 1st nested gtoup
console.groupEnd();
  
console.log();
console.log();
  
// Creating second nested collapsed group 
console.groupCollapsed("GeeksforGeeks (2nd Nested group)");
console.log("Data Structure (1st line)");
console.log("Algorithms & segment tree (2nd line)");
  
// Ending the 2nd nested group
console.groupEnd();
  
console.log();
  
// Printing last line of Main group
console.log("Main group finished");
console.log();
  
// Calling groupEnd() method (It is used 
// to end the group for more understanding
// the group method) 
console.groupEnd();
  
// print from outside the Main group
console.log("GeeksforGeeks (Outside Last)");
  
console.log();
console.log("=========================");

输出:

GeeksforGeeks 
=========================

GeeksforGeeks (main Collapsed group)
  
  GeeksforGeeks (Outside)
  
  GeeksforGeeks (1st Nested group)  
    GeeksforGeeks (1st line)
    Computer Science Portal (2nd line)  
  
  
  GeeksforGeeks (2nd Nested group)      
    Data Structure (1st line)
    Algorithms & segment tree (2nd line)
  
  Main group finished
  
GeeksforGeeks (Outside Last)

=========================

参考: https://nodejs.org/api/console.html#console_console_groupcollapsed

相关用法


注:本文由纯净天空筛选整理自aditya32123大神的英文原创作品 Node.js console.groupCollapsed() Method。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。