将javascript拖放为html并自动格式化所有<code>and/or blocks</code> <pre> <code>and/or blocks</code>

Question

I am looking at this google prettify project: https://github.com/google/code-prettify

In the usage section it says to use it like so:

<pre class="prettyprint">class Voila {
public:
  // Voila
  static const string VOILA = "Voila";

  // will not interfere with embedded <a href="#voila2">tags</a>.
}</pre>

I am looking for a way to style all pre tags without having to add a class to the pre tag. Is there some way to do this with this library or another similar library? I am trying to syntax highlighting in the browser for Java/JavaScript etc.

Answer 1

This is a somewhat hacky solution, but looking at the (minified) code in that library, prettyprint is used in the following section:

u = /\bprettyprint\b/

and

if ((k !== h || u.test(n)) && !e.test(n)) {
  q = !1;
  for (l = d.parentNode; l; l = l.parentNode)
    if (w.test(l.tagName) && l.className &&
        u.test(l.className)) {

It tests whether the className of the iterated elements matches that regular expression. So, if you just remove those tests against u , it should work without having to add a class to the <pre> s:

if (!e.test(n)) {
  q = !1;
  for (l = d.parentNode; l; l = l.parentNode)
    if (w.test(l.tagName)) {

It's now only testing if w ( /^(?:pre|code|xmp)$/i ) matches the tagName of the element.

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 <pre>class Voila { public: // Voila static const string VOILA = "Voila"; // will not interfere with embedded <a href="#voila2">tags</a>. }</pre>