Javascript：如何减少或改进此代码？

Question

This is some JS that I've written, how can this be reduced? it swaps the text as in hides one div and displays the other.

var directorOne = document.getElementById('directorOne').addEventListener("click", changeText);
var directorOneText = document.getElementById('directorOneText');

function changeText() {
    if (directorOneText.style.display === "block") {
        directorOneText.style.display = "none";
        directorTwoText.style.display = "none";
        console.log("luke open");
    } else {
        directorOneText.style.display = "block";
        directorTwoText.style.display = "none";

    }
}

var directorTwo = document.getElementById('directorTwo').addEventListener("click", changeText2);
var directorTwoText = document.getElementById('directorTwoText');

function changeText2() {
    if (directorTwoText.style.display === "block") {
        directorTwoText.style.display = "none";
        directorOneText.style.display = "none";
        console.log("bruce open");
    } else {
        directorTwoText.style.display = "block";
        directorOneText.style.display = "none";
    }
}

Answer 1

Using a single function that is called with the elements as parameters

 var directorOneText = document.getElementById('directorOneText'); var directorTwoText = document.getElementById('directorTwoText'); function changeText(t1, t2) { t1.style.display = (t1.style.display === "block") ? "none" : "block"; t2.style.display = "none"; } var directorOneClickEvent = document.getElementById('directorOne').addEventListener("click", function(){ changeText(directorOneText, directorTwoText)}); var directorTwoClickEvent = document.getElementById('directorTwo').addEventListener("click", function(){ changeText(directorTwoText, directorOneText)});

 #directorOne {background:#333; padding: 20px;} #directorTwo {background:#ddd; padding: 20px;}

 <div id="directorOne">d1<textarea id="directorOneText"></textarea></div> <div id="directorTwo">d2<textarea id="directorTwoText"></textarea></div>