count time in javascript code example
Example 1: javascript count time
var start = new Date().getTime();
for (i = 0; i < 50000; ++i) {
}
var end = new Date().getTime();
var time = end - start;
alert('Execution time: ' + time);
Example 2: javascript count time
var start = new Date().getTime();
for (i = 0; i < 50000; ++i) {
}
var end = new Date().getTime();
var time = end - start;
alert('Execution time: ' + time);
Example 3: javascript calculate time
console.time("timer");
console.timeEnd("timer");