Element: insertAdjacentText() method

Cú pháp

insertAdjacentText(where, data)

Tham số

where

Một chuỗi representing the position relative to the element the method is called from; must be một trong các giá trị sau 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.

data

Một chuỗi from which to create a new text node to insert at the given position where relative to the element the method is called from.

Giá trị trả về

None (undefined).

Ngoại lệ

SyntaxError DOMException

Thrown if where is not a recognized value.

Visualization of position names

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

Ví dụ

beforeBtn.addEventListener("click", () => {
  para.insertAdjacentText("afterbegin", textInput.value);
});

afterBtn.addEventListener("click", () => {
  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.

Đặc tả kỹ thuật

Trình duyệt hỗ trợ

Xem thêm

• Element.insertAdjacentElement()
• Element.insertAdjacentHTML()