StopWatch - Client

The StopWatch API provides methods to measure the duration of operations.

You can use this API in client-side scripts using ListV2 and ListV3 APIs.

StopWatch - StopWatch()

Creates an instance of the StopWatch class.

Uses the current time as the start time.

表 : 1. Parameters

Name	Type	Description
None

var sw = new StopWatch();

// some slow code here
for(var i=0,j=1;i<100000000;i++) {
    j=Math.sqrt(i*i*j);
}

if (sw.getTime() > 500)
    console.log("Long running script. Execution time: [" + sw.toString() + "]");

sw.restart();

// some faster code
for(i=0,j;i<100000;i++) {
    j= i + Math.random() * i;
}

console.log("Finished in: " + sw.getTime() + "ms");
sw.stop();

StopWatch - StopWatch(Date initialDate)

Creates an instance of the StopWatch class using the specified date as the initial value.

表 : 2. Parameters

Name	Type	Description
initialDate	Date	The initial date for the object.

StopWatch - getTime()

Returns the number of milliseconds since the timer started.

表 : 3. Parameters

Name	Type	Description
None

表 : 4. Returns

Type	Description
Number	Time since the timer started. Unit: Milliseconds

var sw = new StopWatch();

// some slow code here
for(var i=0,j=1;i<100000000;i++) {
    j=Math.sqrt(i*i*j);
}

if (sw.getTime() > 500)
    console.log("Long running script. Execution time: [" + sw.toString() + "]");

sw.restart();

// some faster code
for(i=0,j;i<100000;i++) {
    j= i + Math.random() * i;
}

console.log("Finished in: " + sw.getTime() + "ms");
sw.stop();

StopWatch - restart()

Resets the timer start to the current time.

表 : 5. Parameters

Name	Type	Description
None

表 : 6. Returns

Type	Description
void

var sw = new StopWatch();

// some slow code here
for(var i=0,j=1;i<100000000;i++) {
    j=Math.sqrt(i*i*j);
}

if (sw.getTime() > 500)
    console.log("Long running script. Execution time: [" + sw.toString() + "]");

sw.restart();

// some faster code
for(i=0,j;i<100000;i++) {
    j= i + Math.random() * i;
}

console.log("Finished in: " + sw.getTime() + "ms");
sw.stop();

StopWatch - toString()

Returns the elapsed time.

表 : 7. Parameters

Name	Type	Description
None

表 : 8. Returns

Type	Description
String	Elapsed time. Format: HH:MM:SS.SSS

var sw = new StopWatch();

// some slow code here
for(var i=0,j=1;i<100000000;i++) {
    j=Math.sqrt(i*i*j);
}

if (sw.getTime() > 500)
    console.log("Long running script. Execution time: [" + sw.toString() + "]");

sw.restart();

// some faster code
for(i=0,j;i<100000;i++) {
    j= i + Math.random() * i;
}

console.log("Finished in: " + sw.getTime() + "ms");
sw.stop();