executes the template on the data in the form value named <code>s</code>.
</p>
<p>
-The template package is powerful;
+The template package <code>html/template</code> is powerful;
this program just touches on its capabilities.
-In essence, it rewrites a piece of text on the fly by substituting elements derived
+In essence, it rewrites a piece of HTML text on the fly by substituting elements derived
from data items passed to <code>templ.Execute</code>, in this case the
-form value.
+form value.
Within the template text (<code>templateStr</code>),
double-brace-delimited pieces denote template actions.
The piece from <code>{{html "{{if .}}"}}</code>
That is, when the string is empty, this piece of the template is suppressed.
</p>
<p>
-The snippet <code>{{html "{{urlquery .}}"}}</code> says to process the data with the function
-<code>urlquery</code>, which sanitizes the query string
-for safe display on the web page.
+The two snippets <code>{{html "{{.}}"}}</code> say to show the data presented to
+the template—the query string—on the web page.
+The HTML template package automatically provides appropriate escaping so the
+text is safe to display.
</p>
<p>
The rest of the template string is just the HTML to show when the page loads.
-If this is too quick an explanation, see the <a href="/pkg/text/template/">documentation</a>
+If this is too quick an explanation, see the <a href="/pkg/html/template/">documentation</a>
for the template package for a more thorough discussion.
</p>
<p>
import (
"flag"
+ "html/template"
"log"
"net/http"
- "text/template"
)
var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
</head>
<body>
{{if .}}
-<img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{urlquery .}}" />
+<img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{.}}" />
<br>
-{{html .}}
+{{.}}
<br>
<br>
{{end}}