font-size

The font-size CSS property indicates the desired height of glyphs from the font.

Syntax

CSS

font-size: value;

JS

object.style.fontSize = "value";

Values

<'font-size'> = <absolute-size> | <relative-size> | <length-percentage>

<absolute-size> = [ xx-small | x-small | small | medium | large | x-large | xx-large ]

<relative-size> = [ larger | smaller ]

<length-percentage> = [ <length> | <percentage> ]

<length>

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

<percentage>

Specifies the percentage using a number followed by a percent sign (%).

Initial

medium

<!doctype html>
<html>
<body>
    <button onmouseover="myfunction(innerHTML)">initial</button><br>
    <button onmouseover="myfunction(innerHTML)">xx-small</button>
    <button onmouseover="myfunction(innerHTML)">x-small</button>
    <button onmouseover="myfunction(innerHTML)">small</button>
    <button onmouseover="myfunction(innerHTML)">medium</button>
    <button onmouseover="myfunction(innerHTML)">large</button>
    <button onmouseover="myfunction(innerHTML)">x-large</button>
    <button onmouseover="myfunction(innerHTML)">xx-large</button><br>
    <button onmouseover="myfunction(innerHTML)">smaller</button>
    <button onmouseover="myfunction(innerHTML)">larger</button><br>
    <button onmouseover="myfunction(value)" value="1em">em</button>
    <button onmouseover="myfunction(value)" value="2.235ex">ex</button>
    <button onmouseover="myfunction(value)" value="0.1667in">in</button>
    <button onmouseover="myfunction(value)" value="0.423cm">cm</button>
    <button onmouseover="myfunction(value)" value="4.23mm">mm</button>
    <button onmouseover="myfunction(value)" value="1pc">pc</button>
    <button onmouseover="myfunction(value)" value="12pt">pt</button>
    <button onmouseover="myfunction(value)" value="16px">px</button><br>
    <button onmouseover="myfunction(value)" value="150%">percentage</button>
    <p>font-size</p>
    <script>
        function myfunction(myparameter)
        {
            document.querySelector("p").style.fontSize = myparameter;
        }
    </script>
</body>
</html>

6 · JS · Internal

<!doctype html>
<html>
<body>
    <button>initial</button><br>
    <button>xx-small</button>
    <button>x-small</button>
    <button>small</button>
    <button>medium</button>
    <button>large</button>
    <button>x-large</button>
    <button>xx-large</button><br>
    <button>smaller</button>
    <button>larger</button><br>
    <button value="1em">em</button>
    <button value="2.235ex">ex</button>
    <button value="0.1667in">in</button>
    <button value="0.423cm">cm</button>
    <button value="4.23mm">mm</button>
    <button value="1pc">pc</button>
    <button value="12pt">pt</button>
    <button value="16px">px</button><br>
    <button value="150%">percentage</button>
    <p>font-size</p>
    <script>
        function myfunction(myparameter)
        {
            document.querySelector("p").style.fontSize = myparameter;
        }
        const myelements = document.querySelectorAll("button");
        for(let myelement of myelements)
        {
            let myargument = myelement.innerHTML;
            if(myelement.value)
            {
                myargument = myelement.value;
            }
            myelement.addEventListener("mouseover", function(){myfunction(myargument)});
        }
    </script>
</body>
</html>

Syntax

CSS

JS

Values

Initial

Examples

1 · absolute-size

2 · length

3 · percentage

4 · relative-size

5 · JS · Inline

6 · JS · Internal

Links

Properties

External