Element.insertAdjacentText()
insertAdjacentText()
方法将一个给定的文本节点插入在相对于被调用的元素给定的位置。
语法
insertAdjacentText(where, data)
参数
- position
-
A
DOMString
representing the position relative to theelement
; must be one of the following strings:'beforebegin'
: Before theelement
itself.'afterbegin'
: Just inside theelement
, before its first child.'beforeend'
: Just inside theelement
, after its last child.'afterend'
: After theelement
itself.
- element
-
A
DOMString
representing the text to be inserted into the tree.
返回值
Void.
例外
Exception | Explanation |
---|---|
SyntaxError |
The position specified is not a recognised value. |
Visualization of position names
<!-- beforebegin -->
<p>
<!-- afterbegin -->
foo
<!-- beforeend -->
</p>
<!-- afterend -->
备注:只有当节点位于树中并具有元素父元素时,beforebegin 和 afterend 位置才能工作。
范例
beforeBtn.addEventListener("click", function () {
para.insertAdjacentText("afterbegin", textInput.value);
});
afterBtn.addEventListener("click", function () {
para.insertAdjacentText("beforeend", textInput.value);
});
Have a look at our insertAdjacentText.html demo on GitHub (see the source code too.) Here we have a simple paragraph. You can enter some text into the form element, then press the Insert before and Insert after buttons to insert it before or after the existing paragraph text using insertAdjacentText()
. Note that the existing text node is not added to — further text nodes are created containing the new additions.
规范
Specification |
---|
DOM Standard # dom-element-insertadjacenttext |
浏览器兼容性
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