Underscore.js _.isSet() Function
Last Updated :
01 Aug, 2023
Underscore.js is a library in javascript that makes operations on arrays, string, objects much easier and handy. _.isSet() function is used to check whether the given object is javascript set or not. When linking the underscore.js CDN The “_” is attached to the browser as global variable.
Syntax:
_.isSet(object);
Parameters:
- object: It is any JavaScript object such as array, string, maps, set etc.
Returns: It returns the boolean value. If the object is a JavaScript set, it returns true otherwise false is returned by the function.
Few Examples are given below for a better understanding of the function.
Note: It is necessary to link the CDN of UnderScore.js before running code in the browser.
Example 1: When an Set is given the output is True.
html
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charMap = "UTF-8" >
< meta name = "viewport"
content = "width=device-width, initial-scale=1.0" >
< title >Document</ title >
< script src =
</ script >
</ head >
< body >
< script >
//creating a set using constructor
var obj= new Set();
//using the underscore.js function _.isSet()
var isSet= _.isSet(obj);
console.log(isSet)
//If the given object is Set it prints the object is set
if(isSet)
console.log(`The ${obj} is the Set of Javascript.`)
else
console.log(`The ${obj} is not the Set of Javascript.`)
</ script >
</ body >
</ html >
|
Output:
Example 2: When a Array is given it returns False.
html
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charMap = "UTF-8" >
< meta name = "viewport"
content = "width=device-width, initial-scale=1.0" >
< title >Document</ title >
< script src =
</ script >
</ head >
< body >
< script >
//creating a array of size 2 using constructor
var obj= new Array(2);
//filling array with value 10
obj.fill(10);
//using the underscore.js function _.isSet()
var isSet= _.isSet(obj);
console.log(isSet)
//If the given object is Set it prints the object is Set.
if(isSet)
console.log(`The ${obj} is the Set of Javascript.`)
else
console.log(`The ${obj} is not the Set of Javascript.`)
</ script >
</ body >
</ html >
|
Output:
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