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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The ParentNode.append method inserts a set of Node objects or DOMString objects after the last child of the ParentNode. DOMString objects are inserted as equivalent Text nodes.

Differences to Node.appendChild():

  • ParentNode.append() allows you to also append DOMString object, whereas Node.appendChild() only accepts Node objects.
  • ParentNode.append() has no return value, whereas Node.appendChild() returns the appended Node object.
  • ParentNode.append() can append several nodes and strings, whereas Node.appendChild() can only append one node.

Syntax

[Throws, Unscopable] 
void ParentNode.append((Node or DOMString)... nodes);

Parameters

nodes
A set of Node or DOMString objects to insert.

Exceptions

Examples

Appending an element

var parent = document.createElement("div");
var p = document.createElement("p");
parent.append(p);

console.log(parent.childNodes); // NodeList [ <p> ]

Appending text

var parent = document.createElement("div");
parent.append("Some text");

console.log(parent.textContent); // "Some text"

Appending an element and text

var parent = document.createElement("div");
var p = document.createElement("p");
parent.append("Some text", p);

console.log(parent.childNodes); // NodeList [ #text "Some text", <p> ]

ParentNode.append() is unscopable

The append() method is not scoped into the with statement. See Symbol.unscopables for more information.

var parent = document.createElement("div");

with(parent) { 
  append("foo");
}
// ReferenceError: append is not defined 

Polyfill

You can polyfill the append() method in Internet Explorer 9 and higher with the following code:

// Source: https://github.com/jserz/js_piece/blob/master/DOM/ParentNode/append()/append().md
(function (arr) {
  arr.forEach(function (item) {
    if (item.hasOwnProperty('append')) {
      return;
    }
    Object.defineProperty(item, 'append', {
      configurable: true,
      enumerable: true,
      writable: true,
      value: function append() {
        var argArr = Array.prototype.slice.call(arguments),
          docFrag = document.createDocumentFragment();
        
        argArr.forEach(function (argItem) {
          var isNode = argItem instanceof Node;
          docFrag.appendChild(isNode ? argItem : document.createTextNode(String(argItem)));
        });
        
        this.appendChild(docFrag);
      }
    });
  });
})([Element.prototype, Document.prototype, DocumentFragment.prototype]);

Specification

Specification Status Comment
DOM
The definition of 'ParentNode.append()' in that specification.
Living Standard Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support54 No49 No3910
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support5454 ?493910.26.0

See also

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最終更新者: ExE-Boss,