indexOf is not a function on an array in jQuery grep

Question

Here's my function

function search(){

  var searchValue = $('#search-bar').val();



  console.log(Array.isArray(initData[0].body)); //true



  returnArr = $.grep(initData[0].body, function( element, idx ) {

      return element.indexOf(searchValue) != -1; // error: indexOf is not a function

  });



}

I'm getting

indexOf

is not a function.

I know initData[0].body is an array (see code)

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Answer 1

You are calling indexOf on the element variable which is an item inside your initData[0].body array. Make sure element is an array type if you are calling indexOf on it.

indexOf is not a function on an array in jQuery grep

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