What you're actually looking for is something a little more like this, I
think:
var ew = document.evaluate("//strong[2]", document, null, 9,
null).singleNodeValue;
if (ew) {
ew = ew.innerHTML * 1;
alert("Number of earthworms is " + ew);
}
This works (or doesn't; I haven't actually tested the whole thing, but
it should work fine) because you can index nodes found by number
(starting at 1). Also, I stuck in the check I suggested in the last
message, to make sure you won't get any null reference errors (the if
(ew) { and }).
On 2009-10-26 15:41, Stuer Michael wrote:
> so like you guys said i removed the Pcontains thing because there is
> no<p>
> and when i first tried he nagged about the return again so i removed
> it and therefore ended up with :
>
> var ew=document.evaluate("//strong",document,null,
> 9,null).singleNodeValue;
>
> ew=ew.innerHTML*1;
>
> alert("Number of earthworms is "+ew);
>
> and when i ran this i finally got output... namely my fishing fever
> score (wich is a different number in<strong> a little before the one
> i need. (actually the one right before it.
>
> so how can i make him skip the first one and use the second one he
> finds.
>
> PS: i allready want to thank all of you for helping me here :p i know
> i'm not the most experienced scripter but its nice that others help
> you sometimes :p
>
> friendly greets
>
> On 24 okt, 20:46, cc<[email protected]> wrote:
>
>> 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<[email protected]> 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<[email protected]> wrote:
>>>>
>>
>>>>> On Fri, Oct 23, 2009 at 4:33 AM, 杨大成<[email protected]> 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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>
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