The return only works if the chunk of code is within a function. If
you're using a current version of Greasemonkey, it should just work
(because most versions wrap the script in an anonymous function before
executing).
Alternatively, reverse the logic of the if statement and put the two
following statements inside the if block, getting rid of the return
statement entirely.
Gordon already touched on the real problem with this code, of course,
which is that the XPath is looking for <p> tags that don't exist.
On 2009-10-24 05:48, Stuer Michael wrote:
> Well i just tried the piece of code erik posted but i got some errors
>
> i tried the script as follows
>
> var ew = document.evaluate("//p[contains(.,'earthworms')]/
> strong",document,null,9,null).singleNodeValue;
>
> if(!ew) return; // no earthworms node found
>
> ew = ew.innerHTML*1;
>
> alert("Number of earthworms is "+ew);
>
> but i got this error: SyntaxError: return not in function
> in eval() line 0
>
> and then i tried withouth the return line and got this:
>
> TypeError: ew is null
>
> maybe it'll help if i post more of the source page.
>
>
> <table id="megaTable2" cellpadding="0" cellspacing="0">
> <tr>
> <td rowspan="2" id="leftSpacing">
> </td>
> <td id="contentBox" height="500" valign="top">
> <center> <table border="0" cellspacing="0"
> cellpadding="2"
> width="100%">
>
> <tr>
> <td width=95% class="heading_box">
> Fishing Fever
> </td>
> </tr>
> </table><br>Here in the lake district, we offer you the chance to
> compete in our famous fishing fever competition. All you need is an
> earthworm to use as bait, and a good sense of where in the lake you'll
> find the largest catch.<br><br>Your current fishing fever score is
> <strong>31</strong><br><br>You currently have<strong>98</strong>
> earthworms. Earn more at<a href='dirtdigger.php'>Dirt Digger</
> a><br><br>Pick a location, cast your line, and see what you reel in!
> <br><br><form method='post' action='/fishingfever.php?act=fish'><input
> type='image' src='http://www.pokeplushies.com/images/games/
> cf_lake.jpg' style='cursor:crosshair;'><input type='hidden'
> name='code' value='74848'></form><br><br><a href='/fishingfever.php?
> act=topfishers'>Click here to see who the top fishers are!</a>
> </
> center>
>
> </td>
> <td rowspan="2" width="160" valign="top">
> <center>
>
>
>
> On Oct 23, 8:30 pm, Erik Vold<erikvv...@gmail.com> wrote:
>
>> A regex will work, but xpath expression is better in general, or you
>> could write an xpath expression with some
>> regexhttp://www.regular-expressions.info/xpath.html
>> which is probably better if you are going to use regex at all.
>>
>> Using Gordon's xpath exp the js to get your earthworm count should be
>> like:
>> var ew=document.evaluate("//p[contains(.,'earthworms')]/
>> strong",document,null,9,null).singleNodeValue;
>> if(!ew) return;// no earthworms node found
>> ew=ew.innerHTML*1;
>> alert("Number of earthworms is "+ew);
>>
>> Where the last line that alerts the earthworm count is something more
>> useful.
>>
>> Erik
>>
>> On Oct 23, 6:36 am, Gordon Pettey<petteyg...@gmail.com> wrote:
>>
>>
>>> On Fri, Oct 23, 2009 at 4:33 AM, 杨大成<dachen...@gmail.com> wrote:
>>>
>>>> i don't see any js can operate<strong> ,
>>>> how about regex?
>>>>
>>
>>> I repeat: XPath. No need for a regex.
>>>
> >
>
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