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node.js Stream writable.writableObjectMode用法及代码示例


Stream模块中的writable.writableObjectMode属性用于获取Writable流的对象模式值。

用法:

writable.writableObjectMode 

返回值:如果objectMode设置为true,则返回true,否则返回false。


以下示例说明了Node.js中writable.writableObjectMode属性的使用:

范例1:

// Node.js program to demonstrate the      
// writable.writableObjectMode Property 
   
// Accessing stream module 
const stream = require('stream'); 
   
// Creating a stream and creating  
// a write function 
const writable = new stream.Writable({ 
   
  // setting value of objectMode 
  objectMode:true, 
   
  // Write function with its  
  // parameters 
  write:function(chunk, encoding, next) { 
  
    // Converting the chunk of 
    // data to string 
    console.log(chunk.toString()); 
    next(); 
  } 
}); 
  
// Writing data 
writable.write('GfG') 
   
// Calling writable.writableObjectMode  
// Property 
writable.writableObjectMode;

输出:

GfG
true

范例2:

// Node.js program to demonstrate the      
// writable.writableObjectMode Property 
   
// Accessing stream module 
const stream = require('stream'); 
   
// Creating a stream and creating  
// a write function 
const writable = new stream.Writable({ 
   
  // Write function with its  
  // parameters 
  write:function(chunk, encoding, next) { 
   
    // Converting the chunk of 
    // data to string 
    console.log(chunk.toString()); 
    next(); 
  } 
}); 
   
// Writing data 
writable.write('GfG') 
   
// Calling writable.writableObjectMode  
// Property 
writable.writableObjectMode;

输出

GfG
false

此处,未设置objectMode,因此默认情况下将其设置为false。

参考: https://nodejs.org/api/stream.html#stream_writable_writableobjectmode



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注:本文由纯净天空筛选整理自nidhi1352singh大神的英文原创作品 Node.js | Stream writable.writableObjectMode Property。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。