Value

A string containing an integer value specifying the thickness of the border that should surround the image, in CSS pixels. A value of 0, or an empty string, indicates that there should be no border drawn. The default value of border is 0.

When set to the null value, that null value is converted to the empty string (""), so elt.border = null is equivalent to elt.border = "".

Examples

Setting the border attribute

const img = new Image();
img.src = "example.png";
img.border = "1";

Instead of using the deprecated border property, consider setting the CSS border property instead:

const img = new Image();
img.src = "example.png";
img.style.border = "1px solid black";

Specifications

Browser compatibility