border-width

The border-width CSS property is shorthand for border-top-width, border-right-width, border-bottom-width, and border-left-width.

Syntax

CSS

border-width: value;

JS

object.style.borderWidth = "value";

Values

<'border-width'> = <line-width>{1,4}

<line-width> = <length [0,∞]> | thin | medium | thick

<length>

Specifies the length using a number followed by a unit of measurement.

thin

A thin line.

medium

A medium line.

thick

A thick line.

Initial

medium

<!doctype html>
<html>
<head>
    <style>
        p
        {
            border-style: solid;
        }
    </style>
</head>
<body>
    <button>initial</button>
    <button value="1px">length</button>
    <button>medium</button>
    <button>thick</button>
    <button>thin</button><br>
    <button value="1px">top-right-bottom-left</button>
    <button value="1px medium">top-bottom right-left</button>
    <button value="1px medium thick">top right-left bottom</button>
    <button value="1px medium thick thin">top right bottom left</button>
    <p>border-width</p>
    <script>
        var elements = document.querySelectorAll("button");
        for(let element of elements)
        {
            function myfunction()
            {
                var myvar = element.innerHTML;
                if(element.value)
                {
                    myvar = element.value;
                }
                document.querySelector("p").style.borderWidth = myvar;
            }
            element.addEventListener("mouseover", myfunction);
        }
    </script>
</body>
</html>

Syntax

CSS

JS

Values

Initial

Examples

length

medium

thick

thin

JS

Links

Internal

External