Node. js console. log method instructions, node. jsconsole. log

Node. js console. log method instructions, node. jsconsole. log

Method description:

Print characters to the standard output stream and end with a line break.

Syntax:

Copy codeThe Code is as follows:
Console. log ([data], [...])

Receiving parameters:

Console. log accepts several parameters. If there is only one parameter, the string format of this parameter is output.

If multiple parameters exist, they are output in a format similar to the C language printf () command.

If there is no parameter, only one line break is printed.

Example:

Copy codeThe Code is as follows:
Var count = 1234;
Console. log ('count: % d', count );
// Output result count: 1234;
Console. log ('Hello World ');
// Output result Hello world;
Console. log ('count: % D ');
// Output result count: % d;

Source code:

Copy codeThe Code is as follows:
Console. prototype. log = function (){
This. _ stdout. write (util. format. apply (this, arguments) + '\ n ');
};