Instructions for using the console.timeEnd method in node.js_node.js

Method description:

Completion time, the time spent between executing console.time and console.timeEnd.

Grammar:

Copy code The code is as follows:

console.timeEnd(label)

Receive parameters:

Label corresponds to the label of console.log at the start time

Example:

Copy code The code is as follows:

console.time('100-elements');
for (var i = 0; i < 100; i ) {
;
}
console.timeEnd('100-elements');

Source code:

Copy code The code is as follows:

Console.prototype.timeEnd = function(label) {
var time = this._times[label];
if (!time) {
Throw new Error('No such label: ' label);
}
var duration = Date.now() - time;
This.log('%s: %dms', label, duration);
};