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12 February, 2019

Node.js Timer

 Programing Coderfunda     February 12, 2019     Nodejs-Hindi, Nodejs-Timer     No comments   

Node.js Timer - Node.js टाइमर

Node.js टाइमर फ़ंक्शन वैश्विक फ़ंक्शन हैं। टाइमर फ़ंक्शन का उपयोग करने के लिए आपको आवश्यकता () फ़ंक्शन का उपयोग करने की आवश्यकता नहीं है। आइए टाइमर फ़ंक्शन की सूची देखें।

टाइमर फ़ंक्शन सेट करें:

     setImmediate (): इसका उपयोग setImmediate को निष्पादित करने के लिए किया जाता है।
     setInterval (): इसका उपयोग समय अंतराल को परिभाषित करने के लिए किया जाता है।
     setTimeout (): () - इसका उपयोग देरी के बाद एक बार कॉलबैक निष्पादित करने के लिए किया जाता है।

टाइमर कार्य साफ़ करें:

     ClearImmediate (तात्कालिक ऑबजेक्ट): इसका उपयोग एक तत्काल ऑबजेक्ट को रोकने के लिए किया जाता है, जैसा कि setImmediate द्वारा बनाया गया है
     ClearInterval (इंटरवलऑब्जेक्ट): इसका उपयोग इंटरवलऑब्जेक्ट को रोकने के लिए किया जाता है, जैसा कि setInterval द्वारा बनाया गया है
     clearTimeout (timeoutObject): यह टाइमआउट ऑबजेक्ट को रोकता है, जैसा कि सेटटाइमआउट द्वारा बनाया गया है

Node.js Timer setInterval() Example

This example will set a time interval of 1000 millisecond and the specified comment will be displayed after every 1000 millisecond until you terminate.

File: timer1.js

    setInterval(function() { 
     console.log("setInterval: Hey! 1 millisecond completed!..");  
    }, 1000);  

  1. var i =0;  
  2. console.log(i);  
  3. setInterval(function(){  
  4. i++;  
  5. console.log(i);  
  6. }, 1000);   
Open Node.js command prompt and run the following code:

Node.js Timer setTimeout() Example

File: timer1.js
  1. setTimeout(function() {   
  2. console.log("setTimeout: Hey! 1000 millisecond completed!..");  
  3. }, 1000);  
Open Node.js command prompt and run the following code:

This example shows time out after every 1000 millisecond without setting a time interval. This example uses the recursion property of a function.
File: timer2.js
  1. var recursive = function () {  
  2.     console.log("Hey! 1000 millisecond completed!..");   
  3.     setTimeout(recursive,1000);  
  4. }  
  5. recursive();   
Open Node.js command prompt and run the following code:

Node.js setInterval(), setTimeout() and clearTimeout()

Let's see an example to use clearTimeout() function.
File: timer3.js
  1. function welcome () {  
  2.   console.log("Welcome to JavaTpoint!");  
  3. }  
  4. var id1 = setTimeout(welcome,1000);  
  5. var id2 = setInterval(welcome,1000);  
  6. clearTimeout(id1);  
  7. //clearInterval(id2);  

Node.js setInterval(), setTimeout() and clearInterval()

Let's see an example to use clearInterval() function.
File: timer3.js
  1. function welcome () {  
  2.   console.log("Welcome to JavaTpoint!");  
  3. }  
  4. var id1 = setTimeout(welcome,1000);  
  5. var id2 = setInterval(welcome,1000);  
  6. //clearTimeout(id1);  
  7. clearInterval(id2); 


 

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