Question

我无法让jQuery的$(this)函数按预期工作......或者更确切地说，可以工作。据我所知，两者都是

$('.chamber').each(function(){
    $(this).find('.cell').slice(0,19).css('background-color','red');
});

和

$('.chamber').each(function(){
    $('.cell',this).slice(0,19).css('background-color','red');
});

应该做同样的事情：在每个.cell中选择前20个（或19个？）.chamber，并将它们设为红色。

不幸的是，实际发生的是它们都抛出了同样的错误：

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);

我做错了什么？

Answer 1

首先，你是对的，两种语法都是等价的。

您的缩小jQuery脚本似乎存在问题。我从googlecode下载了同一个，我在那里找不到任何YName变量。

我会在这里说话，并说GetElementsByName()对{{1}}的呼叫因某种原因而出现乱码。尝试使用脚本的新副本。

Answer 2

请参阅此示例：它运行良好http://jsfiddle.net/FCFmy/

jQuery $（this）.find（）和$（selector，this）不起作用

2 个答案: