Question

How to move an item of an array to the first position in JavaScript

Answer 1

let arr = ["javascript", "java", "c", "c++", "c#"];
 
const first = "c";
 
arr.sort(function(x, y){ return x == first ? -1 : y == first ? 1 : 0; });
  
console.log(arr); 
  
  
 
  
/*
run:
  
["c", "javascript", "java", "c++", "c#"]
  
*/

 

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Answer 2

let arr = ["javascript", "java", "c", "c++", "c#"];
 
const index = 2;
 
arr.unshift(arr.splice(index, 1)[0]);
   
console.log(arr); 
  
  
 
  
/*
run:
  
["c", "javascript", "java", "c++", "c#"]
  
*/

 

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Answer 3

let arr = ["javascript", "java", "c", "c++", "c#"];
 
const index = arr.indexOf('c');
 
arr.unshift(arr.splice(index, 1)[0]);
   
console.log(arr); 
  
  
 
  
/*
run:
  
["c", "javascript", "java", "c++", "c#"]
  
*/

 

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