在页面上使用相同类名的多个类上应用jQuery代码时，我遇到了一些问题.看起来代码只适用于其中一个类，但不适用于多个类.
如您所见，页面上有两个TwoColumnUnit类，但只有前TwoColumnUnit个类 Select 了jQuery代码，而不是第二个TwoColumnUnit类.
我如何修复代码，以使此代码可以在具有相同类名的多个类上工作？
$('.TwoColumnUnit').each(function() {
var pairs = [document.querySelector('.TwoColumnUnit_Left'), document.querySelector('.TwoColumnUnit_Right')];
pairs.forEach(function(pair) {
if (pair) {
var boxes = pair.getElementsByClassName('col-sm-12 col-md-6');
var maxHeight = 0;
Array.from(boxes).forEach(function(box) {
box.style.height = ''; // Reset
maxHeight = Math.max(maxHeight, box.offsetHeight);
});
Array.from(boxes).forEach(function(box) {
box.style.height = maxHeight + 'px';
});
}
});
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<div class="TwoColumnUnit">
<div class="col-md-6 col-xs-12 TwoColumnUnit_Left">
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-route"></i>
<h3>This is about Tennis</h3>
</div>
<div class="right_Side">
<p><span>Tennis is a racket sport that is played either individually against a single opponent or between two teams of two players each. </span></p>
</div>
</div>
</div>
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-basketball"></i>
<h3>This is about Basketball</h3>
</div>
<div class="right_Side">
<p><span>Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.</span></p>
</div>
</div>
</div>
</div>
<div class="col-md-6 col-xs-12 TwoColumnUnit_Right">
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-basketball"></i>
<h3>This is about Basketball</h3>
</div>
<div class="right_Side">
<p><span>Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.</span></p>
</div>
</div>
</div>
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-route"></i>
<h3>This is about Tennis</h3>
</div>
<div class="right_Side">
<p><span>Tennis is a racket sport that is played either individually against a single opponent or between two teams of two players each. </span></p>
</div>
</div>
</div>
</div>
</div>
<div class="TwoColumnUnit">
<div class="col-md-6 col-xs-12 TwoColumnUnit_Left">
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-route"></i>
<h3>This is about Tennis</h3>
</div>
<div class="right_Side">
<p><span>Tennis is a racket sport that is played either individually against a single opponent or between two teams of two players each. </span></p>
</div>
</div>
</div>
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-basketball"></i>
<h3>This is about Basketball</h3>
</div>
<div class="right_Side">
<p><span>Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.</span></p>
</div>
</div>
</div>
</div>
<div class="col-md-6 col-xs-12 TwoColumnUnit_Right">
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-basketball"></i>
<h3>This is about Basketball</h3>
</div>
<div class="right_Side">
<p><span>Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.Basketball is a team sport in which two teams, most commonly of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop, while preventing the opposing team from shooting through their own hoop.</span></p>
</div>
</div>
</div>
<div class="newsLetterDiv">
<div class="col-sm-12 col-md-6">
<div class="left_Side">
<i class="fas fas fa-route"></i>
<h3>This is about Tennis</h3>
</div>
<div class="right_Side">
<p><span>Tennis is a racket sport that is played either individually against a single opponent or between two teams of two players each. </span></p>
</div>
</div>
</div>
</div>
</div>