JavaScript console.time() Method
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JavaScript console.time() Method
The console.time() method starts a timer in the console view.
Using this method, you can track how long an operation takes.
Note: It is recommended to give unique name to each timer.
Speed Test for loop
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Check your console (Press F12).</p>
<script>
var i;
console.time();
for(i = 0; i < 1000000; i++){
//dummy for loop
}
console.timeEnd();
</script>
</body>
</html>
Syntax
console.time(label)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| label | Optional | The name to give the new timer. |
Speed Test while loop
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Check your console (Press F12).</p>
<script>
var i = 0;
console.time("While loop");
while(i < 1000000){
//dummy While loop
i++;
}
console.timeEnd("While loop");
</script>
</body>
</html>
Speed Test For loop
vs While loop
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<p>Check your console (Press F12).</p>
<script>
var i;
console.time("For loop");
for(i = 0; i < 1000000; i++){
//dummy for loop
}
console.timeEnd("For loop");
i = 0;
console.time("While loop");
while(i < 1000000){
//dummy while loop
i++;
}
console.timeEnd("While loop");
</script>
</body>
</html>
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