查找动态创建的div

发布于 2024-12-13 17:55:32 字数 777 浏览 0 评论 0原文

我想更改动态创建的 div 但我无法让它工作它不断创建新的 div

var div = document.getElementById('windowx');
var btn;
var doc = content.document

if (div)
{
  div = document.getElementById('windowx')
  div.innerHTML = "something new"
}
else
{
  doc = content.document
  div = doc.body.appendChild(doc.createElement("div"))
  div.setAttribute("id", "windowx")
  div.setAttribute("style",
    "position: fixed; top: 100px; left: 100px; width: 20em;"
    + "border: 2px outset orange; background-color: cornsilk;"
    )
  btn = div.appendChild(doc.createElement("button"))
  btn.setAttribute("style", "position: absolute; bottom: 1ex; right: 1ex;")
  btn.setAttribute("onclick", "document.body.removeChild(this.parentNode)")
  btn.appendChild(doc.createTextNode("Zamknij"))
}

原文

I want to change my dynamically created div
but i can't get this working
it's keep creating new divs

var div = document.getElementById('windowx');
var btn;
var doc = content.document

if (div)
{
  div = document.getElementById('windowx')
  div.innerHTML = "something new"
}
else
{
  doc = content.document
  div = doc.body.appendChild(doc.createElement("div"))
  div.setAttribute("id", "windowx")
  div.setAttribute("style",
    "position: fixed; top: 100px; left: 100px; width: 20em;"
    + "border: 2px outset orange; background-color: cornsilk;"
    )
  btn = div.appendChild(doc.createElement("button"))
  btn.setAttribute("style", "position: absolute; bottom: 1ex; right: 1ex;")
  btn.setAttribute("onclick", "document.body.removeChild(this.parentNode)")
  btn.appendChild(doc.createTextNode("Zamknij"))
}

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旧竹 2024-12-20 17:55:32

现在很明显它是针对 Firefox 插件的：

document.getElementById 将在浏览器 UI 中搜索该元素，而不是网页。但稍后您将该元素添加到页面。因此，您必须在页面中搜索该元素：

var div = content.document.getElementById('windowx');

此外，您还进行了一些不必要的方法调用。这是代码的更清晰版本：

var doc = content.document,
    div = doc.getElementById('windowx'),
    btn;

if (div) {
  div.innerHTML = "something new"
}
else {
  div = doc.body.appendChild(doc.createElement("div"))
  div.setAttribute("id", "windowx")
  div.setAttribute("style",
    "position: fixed; top: 100px; left: 100px; width: 20em;"
    + "border: 2px outset orange; background-color: cornsilk;"
    )
  btn = div.appendChild(doc.createElement("button"))
  btn.setAttribute("style", "position: absolute; bottom: 1ex; right: 1ex;")
  btn.setAttribute("onclick", "document.body.removeChild(this.parentNode)")
  btn.appendChild(doc.createTextNode("Zamknij"))
}

Now that it is clear that it is for a Firefox plugin:

document.getElementById will search for that element in the browser UI, not the web page. But later you are adding the element to the page. Therefore you have to search in the page for that element:

var div = content.document.getElementById('windowx');

Also, you are making some unnecessary method calls. Here is a cleaner version of your code:

var doc = content.document,
    div = doc.getElementById('windowx'),
    btn;

if (div) {
  div.innerHTML = "something new"
}
else {
  div = doc.body.appendChild(doc.createElement("div"))
  div.setAttribute("id", "windowx")
  div.setAttribute("style",
    "position: fixed; top: 100px; left: 100px; width: 20em;"
    + "border: 2px outset orange; background-color: cornsilk;"
    )
  btn = div.appendChild(doc.createElement("button"))
  btn.setAttribute("style", "position: absolute; bottom: 1ex; right: 1ex;")
  btn.setAttribute("onclick", "document.body.removeChild(this.parentNode)")
  btn.appendChild(doc.createTextNode("Zamknij"))
}

回复收藏 0 原文

可可 2024-12-20 17:55:32

对我来说，它对 content.document 感到窒息，窗口对象没有内容属性，所以我不确定您在引用什么。清理了一下，似乎有效。请注意，我直接添加点击处理程序，而不是将其设置为属性。请参阅此处，我通过 jQuery 按钮单击处理程序触发了它： http://jsfiddle.net/hN8uz/1/

var doc = document;
var div = doc.getElementById('windowx');
var btn;

if (div) {
    div.innerHTML = "something new";
}
else {
    div = doc.body.appendChild(doc.createElement("div"));
    div.setAttribute("id", "windowx");
    div.setAttribute("style", "position: fixed; top: 100px; left: 100px; width: 20em;" + "border: 2px outset orange; background-color: cornsilk;");
    btn = div.appendChild(doc.createElement("button"));
    btn.setAttribute("style", "position: absolute; bottom: 1ex; right: 1ex;");
    btn.onclick = function() {
        document.body.removeChild(this.parentNode);
    };
    btn.appendChild(doc.createTextNode("Zamknij"));
}

For me it was choking on content.document, the window object doesn't have a content property so I'm not sure what you were referencing. Cleaned up a bit and it seems to work. Note I'm adding the click handler directly instead of setting it as an attribute. See here where I have it triggered by a jQuery button click handler: http://jsfiddle.net/hN8uz/1/

var doc = document;
var div = doc.getElementById('windowx');
var btn;

if (div) {
    div.innerHTML = "something new";
}
else {
    div = doc.body.appendChild(doc.createElement("div"));
    div.setAttribute("id", "windowx");
    div.setAttribute("style", "position: fixed; top: 100px; left: 100px; width: 20em;" + "border: 2px outset orange; background-color: cornsilk;");
    btn = div.appendChild(doc.createElement("button"));
    btn.setAttribute("style", "position: absolute; bottom: 1ex; right: 1ex;");
    btn.onclick = function() {
        document.body.removeChild(this.parentNode);
    };
    btn.appendChild(doc.createTextNode("Zamknij"));
}

回复收藏 0 原文

~没有更多了~