1 files changed, 29 insertions, 0 deletions
diff --git a/static/script.js b/static/script.js
new file mode 100644
index 0000000..8c61b5a
--- /dev/null
+++ b/static/script.js
@@ -0,0 +1,29 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+$(function() {
+	// Insert line numbers for all playground elements.
+	$('.playground').each(function() {
+		var $spans = $(this).find('> pre > span');
+
+		// Compute width of number column (including trailing space).
+		var max = 0;
+		$spans.each(function() {
+			var n = $(this).attr('num')*1;
+			if (n > max) max = n;
+		});
+		var width = 2;
+		while (max > 10) {
+			max = max / 10;
+			width++;
+		}
+
+		// Insert line numbers with space padding.
+		$spans.each(function() {
+			var n = $(this).attr('num')+" ";
+			while (n.length < width) n = " "+n;
+			$('<span class="number">').text(n).insertBefore(this);
+		});
+	});
+});