What is the method for accessing font sizes through CSS code?

Why is the font size value in CSS returning incorrect values?

Check out this jsFiddle example

Here's the HTML code snippet:

<div id="test">TEXT</div>
<div id="test2">TEXT2</div>

Now, take a look at the CSS:

#test{
    font-size: 38.5648887px;
}
#test2{
    font-size: 38.564px;
}

And here's the jQuery script:

var a = $("#test").css('font-size');
var b = $("#test2").css('font-size');
alert("test  = " + a + "\ntest2 = " + b); // test = 38.5667, test2 = 38.5667

Answer №1

When considering decimal places in your example, it's important to note that the CSS specifications don't mandate a specific level of precision. They simply allow for the use of decimals.

However, the limitation you may be facing with decimal accuracy could be due to the browser's constraints on storing decimal values. This is especially true when dealing with pixel units, as it's impossible to display fractions of pixels accurately.

For more precise results, consider using em units, as they will adjust according to the current font size inheritance, providing a higher level of accuracy for your design needs.

Answer №2

It seems that the issue lies with how decimals are used in defining font sizes. Here is a proper solution for the problem:

CSS

#test{
    font-size: 38px;
}
#test2{
    font-size: 38px;
}

If you want a more flexible approach for different devices, consider using "em" units for defining values:

CSS

#test{
    font-size: 16em;
}
#test2{
    font-size: 15.5em;
}

This concept falls under Responsive Web Design, which you can explore further.

Best regards,

Answer №3

Based on my observations, it seems that most web browsers only decode font sizes up to the thousandth decimal point. Therefore, if your font sizes are almost indistinguishable at that level, the browsers may just be rounding them to match.

I'm interested to understand why you would have two font size declarations that are so close in value, with less than a 1 pixel difference. It suggests that there may be a need to rethink your approach to the problem and find a more effective solution to address the issue at hand.

Answer №4

Your existing solution seems fine, but there's actually no need for jquery here. You can achieve the desired font sizing using pure CSS.

Here's an example:

#example1 {
  font: 38px Arial, Helvetica, sans-serif;
  font-weight: bold;
  text-transform: uppercase;
}

#example2 {
  font: 24px Arial, Helvetica, sans-serif;
  font-weight: bold;
  font-variant: small-caps;
}

HTML:

<div id="example1">text</div>
<div id="example2">Text</div>

Does this address your inquiry?

UPDATE: Take a look at this fiddle for reference: http://jsfiddle.net/e8WDk/2/

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