How to be a software engineer 12

HTML Computer Code Elements

Computer Code

var person = {
    firstName:"John",
    lastName:"Doe",
    age:50,
    eyeColor:"blue"
}

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HTML Computer Code Formatting

Normally, HTML uses variable letter size, and variable letter spacing.
This is not wanted when displaying examples of computer code.
The <kbd>, <samp>, and <code> elements all support fixed letter size and spacing.

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HTML Keyboard Formatting

The HTML <kbd> element defines keyboard input:

Example

<p>To open a file, select:</p>

<p><kbd>File | Open...</kbd></p>

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HTML Sample Formatting

The HTML <samp> element defines a computer output:

Example

<samp>
demo.example.com login: Apr 12 09:10:17
Linux 2.6.10-grsec+gg3+e+fhs6b+nfs+gr0501+++p3+c4a+gr2b-reslog-v6.189
</samp>

 

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HTML Code Formatting

The HTML <code> element defines programming code:

Example

<code>
var person = { firstName:"John", lastName:"Doe", age:50, eyeColor:"blue" }
</code>

 

The <code> element does not preserve extra whitespace and line-breaks:

 Example

<p>Coding Example:</p>

<code>
var person = {
    firstName:"John",
    lastName:"Doe",
    age:50,
    eyeColor:"blue"
}
</code>

To fix this, you must wrap the code in a <pre> element:

 Example

<p>Coding Example:</p>

<code>
<pre>
var person = {
    firstName:"John",
    lastName:"Doe",
    age:50,
    eyeColor:"blue"
}
</pre>
</code>

 

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HTML Variable Formatting

The HTML <var> element defines a mathematical variable:

Example

<p>Einstein wrote:</p>

<p><var>E = m c²</var></p>

 

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HTML Computer Code Elements

Tag	Description
<code>	Defines programming code
<kbd>	Defines keyboard input
<samp>	Defines computer output
<var>	Defines a mathematical variable
<pre>	Defines preformatted text