JavaScript Algorithm : Array.forEach()

JavaScript Algorithm : Array.forEach()

The forEach() method executes a callback function for each element algorithm in the array. JavaScript Algorithm : Array.forEach() - The ‘forEach’ method calls a function that’s outside of forEach and that handles the iteration for the array that it’s checking.

The forEach() method executes a callback function for each element in the array. What does that mean? The ‘forEach’ method calls a function that’s outside of forEach and that handles the iteration for the array that it’s checking. Let’s look closely how it really works.

let flowers = ["peony", "rose", "sunflower", "linaria"]

flowers.forEach(callbackFunc);

function callbackFunc(name, idx, arr){
  console.log(name, idx, arr)
}

forEach: callback function

We are handling an array called flowers. Each element in the array are strings of flower names. Let’s write a callback function and the default arguments are ( each element , index , original array )and you can console log the function or anything but for this lesson, we will console log. Then theforEachmethod will execute the call back function.

ArrayName.forEach((eachEle, index, array) => console.log(eachEle))

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