JSFiddle - React, Tailwind, and code Playground

by MichaelSel

JavaScript

var arrA=[12,54,76,98,45];
var arrB=[12,98];

//Run a loop to go through all elements in arrB
for (var i=0;i<arrB.length;i++) {
   //keep position of element i in arrA
   //if it's not there index will be equal to -1
   var index=arrA.indexOf(arrB[i])
   //if it is there
   if(index!=-1) {
   //remove 1 element at position index from arrA
    arrA.splice(index,1)
   }
}

document.write(arrA)