Node.js Stream writable.writableObjectMode 属性

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

句法：

writable.writableObjectMode 

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

下面的例子说明了 Node.js 中writable.writableObjectMode 属性的使用：

示例 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

示例 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

这里没有设置objectMode ，默认设置为false。

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