Document.body - Web APIs 编辑
The Document.body property represents the <body> or <frameset> node of the current document, or null if no such element exists.
Syntax
const objRef = document.body document.body = objRef
Example
// Given this HTML: <body id="oldBodyElement"></body>
alert(document.body.id); // "oldBodyElement"
const aNewBodyElement = document.createElement("body");
aNewBodyElement.id = "newBodyElement";
document.body = aNewBodyElement;
alert(document.body.id); // "newBodyElement"
Notes
document.body is the element that contains the content for the document. In documents with <body> contents, returns the <body> element, and in frameset documents, this returns the outermost <frameset> element.
Though the body property is settable, setting a new body on a document will effectively remove all the current children of the existing <body> element.
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'Document.body' in that specification. | Living Standard | |
| HTML 5.1 The definition of 'Document.body' in that specification. | Recommendation | |
| HTML5 The definition of 'Document.body' in that specification. | Recommendation |
Browser compatibility
BCD tables only load in the browser
See also
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