我有一个要素E,我用一些内容。 所有这一切都突然发生,我发现,传来的下一个要素应该是E的第一个孩子。 是什么骗子,如何做? 由于E是一个目标,而不是阵列,因此采用非临时性的固定工作方式。
漫长的办法是通过爱婴孩进行消化,并搬进钥匙++,但我确信,有预想办法。
我有一个要素E,我用一些内容。 所有这一切都突然发生,我发现,传来的下一个要素应该是E的第一个孩子。 是什么骗子,如何做? 由于E是一个目标,而不是阵列,因此采用非临时性的固定工作方式。
漫长的办法是通过爱婴孩进行消化,并搬进钥匙++,但我确信,有预想办法。
var eElement; // some E DOM instance
var newFirstElement; //element which should be first in E
eElement.insertBefore(newFirstElement, eElement.firstChild);
prepend
parent.prepend(newChild) // [newChild, child1, child2]
这是现代的联邦文件! 这比以往的备选办法更可读。 目前可在 Chrome、FF和歌舞厅查阅。
添加到末尾的对应数字为append
,取代原来的appendChild
。
parent.append(newChild) // [child1, child2, newChild]
...
).<>>Examples:
parent.prepend(newChild, "foo") // [newChild, "foo", child1, child2]
const list = ["bar", newChild]
parent.append(...list, "fizz") // [child1, child2, "bar", newChild, "fizz"]
https://caniuse.com/#feat=dom-manip-convenience”rel=“noreferer”
你们可以使用
targetElement.insertAdjacentElement( afterbegin , newFirstElement)
https://developer.mozilla.org/en-US/docs/Web/API/Element/insertAhostElement”rel=“noreferer”>MDN :
插入“相邻(......)”方法,在某一职位上插入与所援引要素有关的特定要素。
position
A DOMString representing the position relative to the element; must be one of the following strings:
beforebegin
: Before the element itself.
afterbegin
: Just inside the element, before its first child.
beforeend
: Just inside the element, after its last child.
afterend
: After the element itself.element
The element to be inserted into the tree.
在<代码>内附编码> 现有可调和的方法:
element.insertAdjacentHTML( afterbegin , htmlText )`
这可以直接注入html,如inner Rainbow/code>,但并不压倒一切,因此,你可以把它当作一个微型模范的Enin,并跳跃
document.createElement<>>>的压迫过程,甚至以扼制操纵过程构建一个整体。
element.insertA nearText
forjection sanitize string into 元件 。 不超过<条码>。
You can implement it directly i all your window html elements.
Like this :
HTMLElement.prototype.appendFirst = function(childNode) {
if (this.firstChild) {
this.insertBefore(childNode, this.firstChild);
}
else {
this.appendChild(childNode);
}
};
接受的答复,后附:
function prependChild(parentEle, newFirstChildEle) {
parentEle.insertBefore(newFirstChildEle, parentEle.firstChild)
}
除非我误解:
$("e").prepend("<yourelem>Text</yourelem>");
或
$("<yourelem>Text</yourelem>").prependTo("e");
虽然从你描述中可以看出,存在某种条件,
if (SomeCondition){
$("e").prepend("<yourelem>Text</yourelem>");
}
else{
$("e").append("<yourelem>Text</yourelem>");
}
我想请大家再看。 例:
$("#E").prepend("<p>Code goes here, yo!</p>");
我创建了这一原型,以向母体元素预支元素。
Node.prototype.prependChild = function (child: Node) {
this.insertBefore(child, this.firstChild);
return this;
};
var newItem = document.createElement("LI"); // Create a <li> node
var textnode = document.createTextNode("Water"); // Create a text node
newItem.appendChild(textnode); // Append the text to <li>
var list = document.getElementById("myList"); // Get the <ul> element to insert a new node
list.insertBefore(newItem, list.childNodes[0]); // Insert <li> before the first child of <ul>
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