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John Gruber published a helpful JavaScript Bookmarklet Builder which I used to generate my IPA TTS bookmarklet. A few users reported that Chrome choked on the bookmarklet. I found that the bookmarklet builder does not produce the output that Chrome expects. I was using Chrome 15.0.874.54 beta. For example, take this simple script. (function () [...]
John Gruber published a helpful JavaScript Bookmarklet Builder which I used to generate my IPA TTS bookmarklet.
A few users reported that Chrome choked on the bookmarklet. I found that the bookmarklet builder does not produce the output that Chrome expects. I was using Chrome 15.0.874.54 beta.
For example, take this simple script.
(function () { // what is 1+1? alert(["1+1=",(1+1)].join('')); })()
Gruber’s script produces this bookmarklet: Example 1
javascript:(function%20()%20{alert([%221+1=%22,(1+1)].join(%27%27));})()
If you drag this example to your bookmark bar in Chrome, it will produce this error when invoked.
Uncaught SyntaxError: Unexpected token %
What happened? If you edit the bookmark, you will see that Chrome double-escaped the string,
javascript:(function%2520()%2520%7Balert(%5B%25221+1=%2522,(1+1)%5D.join(%2527%2527));%7D)()
I believe this happened because the string contained some non-escaped characters such as parentheses.
Gruber points out in a footnote that his script intentionally leaves some characters unescaped for the purpose of readability.
It’s unclear to me what characters must be escaped in a bookmarklet URL. Some sources suggest that other punctuation characters, such as brackets and semicolons, ought to be escaped, too, but I can see no practical reason to do so. If you want to be really conservative and escape just about everything, change this line:
uri_escape_utf8($bookmarklet, qq('" \x00-\x1f\x7f-\xff));to:
uri_escape_utf8($bookmarklet);Personally, I prefer to keep the bookmarklet URL itself as readable as possible.
With this change, we get this bookmarklet: Example 2
javascript:%28function%20%28%29%20%7Balert%28%5B%221%2B1%3D%22%2C%281%2B1%29%5D.join%28%27%27%29%29%3B%7D%29%28%29
It may not be as readable as “Example 1″, but it works.
Find my modifications to Gruber’s JavaScript Bookmarklet Builder on GitHub
Ringo, Narwhal, Node, and JavaScriptCore support executing scripts with a shebang. Here are some quick examples to get you started. Ringo #!/usr/bin/env ringo print(“ringo”); Narwhal #!/usr/bin/env narwhal print(“narwhal”); Node #!/usr/bin/env node require(“sys”).print(“node\n”); JavaScriptCore #!/usr/bin/env jsc print(“jsc”); JavaScriptCore nightly added support for shebangs on 6 December 2010. Since Node and JavaScriptCore are binaries, you can use [...]
Ringo, Narwhal, Node, and JavaScriptCore support executing scripts with a shebang.
Here are some quick examples to get you started.
Ringo
#!/usr/bin/env ringo
print("ringo");
Narwhal
#!/usr/bin/env narwhal
print("narwhal");
Node
#!/usr/bin/env node
require("sys").print("node\n");
JavaScriptCore
#!/usr/bin/env jsc
print("jsc");
JavaScriptCore nightly added support for shebangs on 6 December 2010.
Since Node and JavaScriptCore are binaries, you can use the full path instead of env.
Tagged with: JavaScript
I recently grew quite frustrated when I had to update Emend’s Twitter bot to use OAuth. There are, of course, readily available implementations of OAuth in python, even some specifically engineered for App Engine with lovely persistence and caching and KILL ME NOW. I gave up after a couple hours of staring at this nonsense. [...]
I recently grew quite frustrated when I had to update Emend’s Twitter bot to use OAuth.
There are, of course, readily available implementations of OAuth in python, even some specifically engineered for App Engine with lovely persistence and caching and KILL ME NOW.
I gave up after a couple hours of staring at this nonsense. I grew so displeased because my app doesn’t need 95% of what these libraries offer. I only need to sign requests with a fixed oauth_consumer_key, oauth_consumer_secret, oauth_token, and oauth_token_secret. However, this simple task would require me to subclass or instantiate several object with Culver’s library, and I can’t even begin to fathom what I’d need to do with Knapp’s offering.
(Aside: if you want to authorize and build access tokens for your app, I highly recommend this excellent OAuth test client)
I finally teased apart the core function of signing requests, thanks in large part to the great reference example. If all you need is to access a protected resource, this will get the job done with a single function call, no object-orientation required.
