Javascript var temp=this.nextElementSibling.innerHTML；“解决了所有问题！非常感谢您的帮助，我无法告诉您您让我有多高兴！您太棒了！Ivan您太棒了！这行代码”var temp=This.nextElementSibling.i

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var temp=this.nextElementSibling.innerHTML；“解决了所有问题！非常感谢您的帮助，我无法告诉您您让我有多高兴！您太棒了！Ivan您太棒了！这行代码”var temp=This.nextElementSibling.innerHTML；“一切都解决了！非常感谢你的帮助，我无法告诉你你让我有多高兴！你太棒了！

/*we put on event listener for each "refsz" class*/
var elements = document.getElementsByClassName("refsz");

for (var z = 0; z < elements.length; z++) {
    elements[z].addEventListener('click', callThis, false);
}

/*and when the event occurs, I select the sibling div's innerHTML and change
"success" div's innerHTML to this*/

function callThis() {

**var temp= event.target.nextSibling.innerHTML;**
document.querySelector("#success").innerHTML = temp;
}

<div class="parent">

<div> class="refsz"> I will click this </div>
<div> class="sibling"> I need the innerHTML of this sibling</div>

</div>

<div id="success"></div>