utilizing the time delay feature in JavaScript

After a specific condition is met, I want to update my localStorage key values but wait for 2 seconds before making the update.

However, when attempting to set the localStorage value using the following code snippet, an exception is thrown:

if(tempArray.length <= 0){                               
   setTimeout(function(){
       this.storage.set(achkey,1);                              
   },2000);                                   
}

The error message indicates that the variable achkey is undefined within the setTimeout function, even though it can be accessed outside of it. How can I properly add the delay and set the values inside the function? My project utilizes the ImpactJS engine with JavaScript, along with a localStorage plugin.

Answer №1

It is important to remember to cache the value of this. Once you step into the anonymous function of setTimeout, the context of this changes to that of the function.

if(tempArray.length <= 0){                               
   var self = this; // Store the current context's `this`
   setTimeout(function(){
       self.storage.set(achkey,1);                              
   },2000);                                   
} 

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