writable.cork()方法用于强制所有写入的数据缓冲在内存中。只有在调用stream.uncork()或stream.end()方法后，缓冲数据才会从缓冲存储器中删除。
语法
cork()
writeable.cork()
开塞()
writeable.uncork()
参数
因为它缓冲写入的数据。唯一需要的参数将是可写数据。
示例
创建一个名为 cork.js 的文件并复制以下代码片段。创建文件后，使用以下命令运行此代码，如下例所示 -
node cork.js
cork.js
现场演示
// Program to demonstrate writable.cork() method
const stream = require('stream');
// Creating a data stream with writable
const writable = new stream.Writable({
// Writing the data from stream
write: function(chunk, encoding, next) {
// Converting the data chunk to be displayed
console.log(chunk.toString());
next();
}
});
// Writing data
writable.write('Hi - This data is printed');
// Calling the cork() function
writable.cork();
// Again writing some data
writable.write('Welcome to TutorialsPoint !');
writable.write('SIMPLY LEARNING ');
writable.write('This data will be corked in the memory');输出
C:\homeode>> node cork.js Hi - This data is printed
只有在 cork() 方法之间写入的数据才会被打印，而其余数据将被塞入缓冲存储器中。下面的示例展示了如何从缓冲区内存中解锁上述数据。
示例
让我们再看一个有关如何 uncork() 的示例 - uncork.js
现场演示
// Program to demonstrate writable.cork() method
const stream = require('stream');
// Creating a data stream with writable
const writable = new stream.Writable({
// Writing the data from stream
write: function(chunk, encoding, next) {
// Converting the data chunk to be displayed
console.log(chunk.toString());
next();
}
});
// Writing data
writable.write('Hi - This data is printed');
// Calling the cork() function
writable.cork();
// Again writing some data
writable.write('Welcome to TutorialsPoint !');
writable.write('SIMPLY LEARNING ');
writable.write('This data will be corked in the memory');
// Flushing the data from buffered memory
writable.uncork()输出
C:\homeode>> node uncork.js Hi - This data is printed Welcome to TutorialsPoint ! SIMPLY LEARNING This data will be corked in the memory
使用 uncork() 方法刷新缓冲内存后，就会显示上面示例中的完整数据。
