我将如何使用子节点正确实现 onclick 以使 div 消失？

Question

我昨天问了一个问题，但它是题外话，我已经解决了代码以通过悬停实现我想要的目标，但现在我希望每个 div 单击都变得透明。我知道的问题是我在 Dreamweaver 而不是 phpstorm 中工作，我不确定我使用的命令是否有效。我的 html 在这里：

<!DOCTYPE html>
<html>
    <head lang="en">
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <div id="category">

            <div class="content">
            </div>

            <div class="content">
            </div>

            <div class="content">
            </div>

            <div class="content">
            </div>

            <div class="content">
            </div>

        </div>

    <style>
        div { background-color: springgreen; }
        div { width: 100px; }
        div { height: 100px; }
    </style>

</body>
<script src="js/main.js"></script>
</html>

和javascript：

/**
* Created by Mark M. on 3/28/2015.
*
*/

 var category = document.getElementById("category");
 for (var child = category.firstChild; child != null; child =    child.nextSibling) {
  if (child.nodeType == 1 && child.className == "content") {
    child.onmouseover = function() {
        this.style.width = "150px";
        this.style.height = "150px"
    };

    child.onmouseout = function() {
        this.style.width = "100px";
        this.style.height = "100px"
    };

    child.onmouseclick= function() {
        //disappear
        this.style.backgroundColor = "transparent";


    }
}}

Answer 1

问题是您使用的是 'onmouseclick' 而不是 'onclick'

如何使用 document.getElementsByClassName('content') 和 addEventListener() 而不是 'onX' 语法。我相信 addEventListener 更符合标准，应该提供更好的浏览器兼容性。

https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName

https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener

var content = document.getElementsByClassName('content');
console.log('content found', content);
for (var i = 0; i < content.length; i+=1){
  content[i].addEventListener("click", function(){
    this.style.backgroundColor = "transparent";
  });
}

Answer 2

对于您的问题，这应该是一个优雅的解决方案。点击"Run Code Snippet"查看：

var contentDivs = document.getElementsByClassName('content');

for(var i = 0; i < contentDivs.length; i++) {
    var div = contentDivs[i];
    div.onclick = function(){
        this.style.display = 'none';
    }
}

div {background-color: springgreen; width: 100px; height: 100px;}

<div id="category">
    <div class="content">Content 1</div>
    <div class="content">Content 2</div>
    <div class="content">Content 3</div>
    <div class="content">Content 4</div>
    <div class="content">Content 5</div>
</div>

Answer 3

试试这个：

HTML

<div id="category">
    <div class="content"></div>
    <div class="content"></div>
    <div class="content"></div>
    <div class="content"></div>
    <div class="content"></div>
</div>

JavaScript

var arrContent = document.querySelectorAll("#category div.content");
for(i =0; i< arrContent.length; i++){
    var child = arrContent[i];
    console.log(child)
    if (child.nodeType == 1 ) {
        child.onmouseover = function() {
            this.style.width = "150px";
            this.style.height = "150px"
        };

        child.onmouseout = function() {
            this.style.width = "100px";
            this.style.height = "100px"
        };

        child.onclick= function() {
            this.style.backgroundColor  = "transparent";
        }
    }
}`

样式表

div.content {background-color: springgreen;width: 100px;height: 100px;}

var arrContent = document.querySelectorAll("#category div.content");
for(i =0; i< arrContent.length; i++){
var child = arrContent[i];
console.log(child)
if (child.nodeType == 1 ) {
    child.onmouseover = function() {
        this.style.width = "150px";
        this.style.height = "150px"
    };

    child.onmouseout = function() {
        this.style.width = "100px";
        this.style.height = "100px"
    };

    child.onclick= function() {
        this.style.backgroundColor  = "transparent";
    }
}
}

div.content {background-color: springgreen;width: 100px;height: 100px;}

<div id="category">
<div class="content"></div>
<div class="content"></div>
<div class="content"></div>
<div class="content"></div>
<div class="content"></div>
</div>

我将如何使用子节点正确实现 onclick 以使 div 消失？

How would I properly implement onclick using childnodes to make a div disappear?

javascript

html

transparency

children

child-nodes

HTML

JavaScript

样式表