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Lodash _.delay() Method

  • Last Updated : 23 Sep, 2020
Geek Week

Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, strings, objects, numbers, etc.

The _.delay() method is used to call the given function as the parameter after the stated wait time is over, which is in milliseconds. Any further arguments are provided to the function when it is called.

Syntax:

_.delay( func, wait, args )

Parameters: This method accepts three parameters as mentioned above and described below:

  • func: It is the function that has to be delayed.
  • wait: It is the number of milliseconds for which the function call is delayed.
  • args: It is the arguments with which the given function is being called. It is an optional parameter.

Return Value: This method returns the timer id.



Example 1: In this example, the content is printed after the delay of 3 seconds as the wait time is 3 seconds.

Javascript




// Requiring lodash library
const _ = require('lodash');
  
// Using the _.delay() method
// with its parameter
_.delay(function(content) {
    console.log(content);
  }, 3000, 'GeeksforGeeks!');
  
// Print the content after this line
console.log('Content:');

Output:

Content:
GeeksforGeeks!

Example 2: In this example, each integer is printed after a delay of 2 seconds.

Javascript




// Requiring lodash library
const _ = require('lodash');
  
// Defining func parameter
let func = number => {
  console.log(number);
};
  
// Defining for loop
for(let i = 1; i <= 5; i++) {
      
    // Using the _.delay() method
    // with its parameter
    _.delay(func, 2000 * (i + 1), i);
}
  
// Prints the integer after this line
console.log('Integers are as follows:');

Output:

Integers are as follows:
1
2
3
4
5

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