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In order to display an array element through 'filter' in JavaScript, you need to use the filter() method, which creates a new array with all elements that pass the test implemented by the provided function.

Here's an example:

const arr = [1, 2, 3, 4, 5];

const filteredArr = arr.filter(element => element === 3);

console.log(filteredArr); // Output: [3]

In this example, we have an array arr containing the numbers 1 through 5. We use the filter() method to create a new array called filteredArr consisting of only the element that matches the condition element === 3.

The output of console.log(filteredArr) will be [3], as expected.