CODEWITHSUNDEEP
javascript
Abhimanyu
Abhimanyu

Reputation: 57

Couldn't Access Array inside If statement which is present in the for loop in Javascript

JAVASCRIPT:

function identifybrand ( allproducts,favBrand){ 
  var favBrandList = new Array();
  var prodType = document.getElementById('prodType').value;
  for (var i=0;i<=allproducts.length;i++) {
    if (favBrand == allproducts[i].brandName) {
      favBrandList.push(allproducts[i]);
    }
  }
  alert(favBrandList);
}

I couldnt access the favBrandList array outside the for loop. Does anyone have any idea why i m not able to access it?

Upvotes: 1

Views: 64

Answers (1)

Arun P Johny
Arun P Johny

Reputation: 388416

The reason should be you are getting a script error in the loop.

Your loop is faulty, i<=allproducts.length is wrong it should be i<allproducts.length.

Array index starts from 0 to length - 1, so when i equals allproducts.length, allproducts[i] becomes undefined and allproducts[i].brandName will throw a script error.

function identifybrand(allproducts, favBrand) {
    var favBrandList = new Array();
    var prodType = document.getElementById('prodType').value;
    for (var i = 0; i < allproducts.length; i++) {
        if (favBrand == allproducts[i].brandName) {
            favBrandList.push(allproducts[i]);
        }
    }
    alert(favBrandList);
}

Upvotes: 1

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