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var array = [2, 5, 9]; console.log(array) var index = array.indexOf(5); if (index > -1) { array.splice(index, 1); } // array = [2, 9] console.log(array);
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Splice works perfectly. You should debug what you are getting in movies variable

Find the `index` of the array element you want to remove, and then remove that index with [`splice`][1].
> The splice() method changes the contents of an array by removing > existing elements and/or adding new elements.
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var array = [2, 5, 9]; console.log(array) var index = array.indexOf(5); if (index > -1) { array.splice(index, 1); } // array = [2, 9] console.log(array);
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The second parameter of `splice` is the number of elements to remove. Note that `splice` modifies the array in place and returns a new array containing the elements that have been removed.
[1]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice