Is it necessary to use the strict doctype if our code is already valid with the transitional doctype?

Are there any drawbacks to using a transitional doctype with presentational or deprecated elements, even if our code is valid in W3C validation with a transitional doctype?

Will we need to rewrite or edit the code of websites using XHTML/HTML transitional doctype in a few years?

While not as semantic, it may be more efficient to use web-based WYSIWYG editor in CMS for shorter character count.

small {font-size:9px}

<p>hello <small>how</small> are you?</p>

However, this method uses more characters:

.small-text {font-size:9px}

<p>hello <span class="small-text">how</span> are you?</p>

Both options will be validated and supported by current browsers. But which one is the best choice for the future and why?

htmlcssxhtmlw3cw3c-validation

Answer №1

If you continue to specify the transitional doctype, instead of relying solely on transitional elements, it is unlikely that you will encounter significant problems unless browser support for those elements diminishes. Keep in mind that using the transitional doctype may limit your options for utilizing new elements as strict doctypes progress.

It seems improbable that you will face major challenges in the near future. Most websites, especially commercial ones, would likely need to be updated before any issues arise with the use of the transitional doctype - perhaps for marketing or branding purposes.

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