How do I measure the execution time of JavaScript code with callbacks?

Question

I have a piece of JavaScript code that I am executing using the node.js interpreter.

for(var i = 1; i <         


        

Answer 1

Invoking console.time('label') will record the current time in milliseconds, then later calling console.timeEnd('label') will display the duration from that point.

The time in milliseconds will be automatically printed alongside the label, so you don't have to make a separate call to console.log to print a label:

console.time('test');
//some code
console.timeEnd('test'); //Prints something like that-> test: 11374.004ms

For more information, see Mozilla's developer docs on console.time.