Timer

setTimeout

setTimeout(handler[,delay[,…args]]): number

Sets a timer for the system to call a function after the timer goes off.

Parameters

Name	Type	Mandatory	Description
handler	Function	Yes	Function to be called after the timer goes off.
delay	number	No	Number of milliseconds delayed before the execution. If this parameter is left empty, the default value 0 is used, which means that the execution starts immediately or as soon as possible.
...args	Array<any>	No	Additional parameters to pass to the handler after the timer goes off.

Return value

Type	Description
number	Timer ID.

Example

export default {    
  setTimeOut() {        
    var timeoutID = setTimeout(function() {            
      console.log('delay 1s');
    }, 1000);    
  }
}

clearTimeout

clearTimeout(timeoutID: number): void

Cancels the timer created via setTimeout().

Parameters

Name	Type	Mandatory	Description
timeoutID	number	Yes	ID of the timer to cancel, which is returned by setTimeout()

Example

export default {    
  clearTimeOut() {        
    var timeoutID = setTimeout(function() {            
      console.log('do after 1s delay.');        
    }, 1000);        
    clearTimeout(timeoutID);    
  }
}

setInterval

setInterval(handler[, delay[, ...args]]): number

Sets a repeating timer for the system to repeatedly call a function at a fixed interval.

Parameters

Name	Type	Mandatory	Description
handler	Function	Yes	Function to be called repeatedly.
delay	number	No	Number of milliseconds delayed before the execution.
...args	Array<any>	No	Additional parameters to pass to the handler after the timer goes off.

Return value

Type	Description
number	ID of the repeating timer.

Example

export default {    
  setInterval() {        
    var intervalID = setInterval(function() {            
      console.log('do very 1s.');        
    }, 1000);    
  }
}

clearInterval

clearInterval(intervalID: number): void

Cancels the repeating timer set via setInterval().

Parameters

Name	Type	Mandatory	Description
intervalID	number	Yes	ID of the repeating timer to cancel, which is returned by setInterval().

Example

export default {    
  clearInterval() {        
    var intervalID = setInterval(function() {
      console.log('do very 1s.');
    }, 1000);
    clearInterval(intervalID);
  }
}