Image() - Web APIs 编辑
The Image() constructor creates a new HTMLImageElement instance. It is functionally equivalent to document.createElement('img').
Disambiguation: image(), the CSS function notation.
Syntax
var htmlImageElement = new Image(width, height);
Parameters
width- The width of the image (i.e., the value for the
widthattribute). height- The height of the image (i.e., the value for the
heightattribute).
Usage note
The entire bitmap is loaded regardless of the sizes specified in the constructor. The size specified in the constructor is reflected through the properties HTMLImageElement.width and HTMLImageElement.height of the resulting instance. The intrinsic width and height of the image in CSS pixels are reflected through the properties HTMLImageElement.naturalWidth and HTMLImageElement.naturalHeight. If no size is specified in the constructor both pairs of properties have the same values.
Examples
var myImage = new Image(100, 200);
myImage.src = 'picture.jpg';
document.body.appendChild(myImage);This would be the equivalent of defining the following HTML tag inside the <body>:
<img width="100" height="200" src="picture.jpg">
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'Image()' in that specification. | Living Standard |
Browser compatibility
BCD tables only load in the browser
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