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How do you write a function that has a class name and returns a array of strings in javascript?

Write a function that takes one or more class names as a parameter and returns an array of strings, where each string is the inner text content of an anchor tag in the current document that have any of the given classes

question from:https://stackoverflow.com/questions/65947872/how-do-you-write-a-function-that-has-a-class-name-and-returns-a-array-of-strings

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Maybe this one:

<a class="one" href="#">Link 1</a>
<a class="two" href="#">Link 2</a>
<a class="one" href="#">Link 3</a>
<a class="one" href="#">Link 4</a>
<a class="two" href="#">Link 5</a>
<a class="two" href="#">Link 6</a>
<a class="one" href="#">Link 7</a>

<button id="btn">Click me</button>

and JS

var button = document.getElementById('btn');
var className = "one";
button.addEventListener('click', function() {
    find(className);
});


function find(str) {
    var items = document.getElementsByClassName(str);
    for(var i=0; i<items.length; i++) {
        console.log(items[i].innerHTML);
    }
}

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