Instructions for using the buffer.toJSON method in node.js_node.js

Method description:

Convert buffer object into json format.

Grammar:

Copy code The code is as follows:

buffer.toJSON()

Receive parameters:

None

Example:

Copy code The code is as follows:

var buf = new Buffer('test');
var json = JSON.stringify(buf);
console.log(json);
// '{"type":"Buffer","data":[116,101,115,116]}'
var copy = JSON.parse(json, function(key, value) {
Return value && value.type === 'Buffer'
​ ? new Buffer(value.data)
: value;
});
console.log(copy);
//

Source code:

Copy code The code is as follows:

Buffer.prototype.toJSON = function() {
Return {
Type: 'Buffer',
Data: Array.prototype.slice.call(this, 0)
};
};