碎碎念

The insertAdjacentHTML() method parses the specified text as HTML or XML and inserts the resulting nodes into the DOM tree at a specified position. It does not reparse the element it is being used on, and thus it does not corrupt the existing elements inside that element. This avoids the extra step of serialization, making it much faster than direct innerHTMLmanipulation.

SyntaxSection

element.insertAdjacentHTML(position, text);

ParametersSection

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.

text

text is the string to be parsed as HTML or XML and inserted into the tree.

Visualization of position namesSection

<!-- beforebegin -->
<p>
  <!-- afterbegin -->
  foo
  <!-- beforeend -->
</p>
<!-- afterend -->

ExampleSection

// <div id="one">one</div>
var d1 = document.getElementById('one');
d1.insertAdjacentHTML('afterend', '<div id="two">two</div>');

// At this point, the new structure is:
// <div id="one">one</div><div id="two">two</div>

NotesSection

Security ConsiderationsSection

When inserting HTML into a page by using insertAdjacentHTML be careful not to use user input that hasn't been escaped.

It is not recommended you use insertAdjacentHTML when inserting plain text; instead, use the Node.textContent property or Element.insertAdjacentText() method. This doesn't interpret the passed content as HTML, but instead inserts it as raw text.

SpecificationSection

Browser compatibilitySection

See alsoSection

• Element.insertAdjacentElement()
• Element.insertAdjacentText()
• XMLSerializer: Construct a DOM representation of XML text
• hacks.mozilla.org guest post by Henri Sivonen including benchmark showing that insertAdjacentHTML can be way faster in some cases.