The DocumentFragment.prepend() method inserts a set of Node objects or string objects before the first child of the document fragment. String objects are inserted as equivalent Text nodes.
This method prepends a child to a DocumentFragment. To prepend to an arbitrary element in the tree, see Element.prepend().
js
prepend(param1)
prepend(param1, param2)
prepend(param1, param2, /* …, */ paramN)
None (undefined).
HierarchyRequestError DOMException
Thrown when the node cannot be inserted at the specified point in the hierarchy.
js
let fragment = new DocumentFragment();
let div = document.createElement("div");
let p = document.createElement("p");
fragment.append(p);
fragment.prepend(div);
fragment.children; // HTMLCollection [<div>, <p>]
| Specification |
|---|
| DOM Standard # ref-for-dom-parentnode-prepend① |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
prepend |
54 | 17 | 49 | No | 41 | 10 | 54 | 54 | 49 | 41 | 10 | 6.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/DocumentFragment/prepend