javascript jQuery $(this).find() 和 $(selector,this) 不起作用
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jQuery $(this).find() and $(selector,this) not working
提问by Meshaal
I'm having trouble getting jQuery's $(this)function to work as expected... or rather, to work at all. As I understand it, both
我无法让 jQuery 的$(this)函数按预期工作……或者更确切地说，根本无法工作。据我了解，两者
$('.chamber').each(function(){
$(this).find('.cell').slice(0,19).css('background-color','red');
});
and
和
$('.chamber').each(function(){
$('.cell',this).slice(0,19).css('background-color','red');
});
should do the same thing: select the first 20 (or 19?) .cells in each .chamber, and make them red.
应该做同样的事情：选择第一个20（或19？）.cell■在每个.chamber，并让他们红了。
Unfortunately, what actually happens is they both throw the same error:
不幸的是，实际发生的是它们都抛出相同的错误：
Uncaught exception: ReferenceError: Undefined variable: YName
Error thrown at line 19, column 8870 in <anonymous function: CLASS>(W, U, V, T, Z, aa) in jquery-1.3.2.min.js:
if(Z^(YName&&(" "+YName+" ").indexOf(W)>=0))
called from line 19, column 3944 in <anonymous function: F.filter>(ad, ac, ag, W) in jquery-1.3.2.min.js:
Y=I.preFilter[ab](Y,aa,ag,ai,W,Z);
called from line 19, column 896 in <anonymous function>(Y, U, ab, ac) in jquery-1.3.2.min.js:
af=F.filter(ae.expr,ae.set);
called from line 19, column 21013 in <anonymous function: F>(Y, X, V, W) in jquery-1.3.2.min.js:
return T(Y,X,V,W)
called from line 12, column 5629 in <anonymous function: find>(E) in jquery-1.3.2.min.js:
o.find(E,this[0],F);
called from line 169, column 3 in <anonymous function>():
$(this).find('.cell').slice(0,19).css('background-color','red');
called via Function.prototype.call() from unknown location in <anonymous function: each>(G, K, F) in jquery-1.3.2.min.js:
/* no source available */
called from line 12, column 2276 in <anonymous function: each>(F, E) in jquery-1.3.2.min.js:
return o.each(this,F,E)
called from line 168, column 2 in <anonymous function>():
$('.chamber').each(function(){
called from line 26, column 460 in <anonymous function: ready>():
a.call(s,c);
What am I doing wrong?
我究竟做错了什么？
采纳答案by Frédéric Hamidi
First, you're correct, both syntaxes are equivalent.
首先，你是对的，两种语法是等价的。
There seems to be a problem with your minified jQuery script. I downloaded the same one from googlecodeand I cannot find any YNamevariable in there.
您缩小的 jQuery 脚本似乎有问题。我从googlecode下载了相同的一个YName，但在那里找不到任何变量。
I'll go out on a limb here and say calls to GetElementsByName()have been garbled for some reason. Try using a fresh copy of the script.
我会在这里GetElementsByName()冒昧地说一下，由于某种原因，呼叫出现了乱码。尝试使用脚本的新副本。
回答by Emil Condrea
see this example : it works well http://jsfiddle.net/FCFmy/
看这个例子：它运行良好http://jsfiddle.net/FCFmy/
