小编Saj*_*jah的帖子

sudo gem install nokogiri
Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.

        /Users/sajeev86/.rvm/rubies/ruby-1.8.7-p352/bin/ruby extconf.rb
checking for libxml/parser.h... no
-----
libxml2 is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

我无法安装Nokogiri.这对我来说已经有一段时间了.我也通过MacPorts和Homebrew安装了依赖项.

我有一种感觉,正确的目录没有彼此指向？但不知道如何解决.

我希望这是我做过的傻事.我在底部附近有一个函数unigref,我相信它会输出一个字符串.但是,当我调用该函数来构建一个jQuery选择器时,我无法让它正常工作.我知道其他一切都有效,因为当我使用静态字符串时,单选按钮被选中.

这是我的jsfiddle/9Edxx.请帮忙.

var checkCount = 0;
var maxChecks = 2;

$(document).ready(function() {

$("#test").click(function() {
    alert($(':checked').length);
});

$(':checkbox[name=checkbox]').change(function() {


    checkCount = $(':checkbox:checked').length;

    if (checkCount >= maxChecks) {
      $(':checkbox[name=checkbox]').not(':checked').attr('disabled', true);  
        $(":radio[value="+uniqref()+"]").prop('checked', true);


    } else {
      $(':checkbox[name=checkbox]:disabled').attr('disabled', false);
    }

    if (this.checked) {
        $("td.label").append("<label>" + this.value + "</label>");
    } else {
        $("td.label").find(":contains('" + this.value + "')").remove();
    }

});

$('#button').click(function() {
    alert(uniqref());
});


function uniqref() {
    return $("td.label").text().split('').sort().join('').replace(/\s/g, "");
}


});?

更新:错字是正确的,但问题仍然存在.

http://jsfiddle.net/9Edxx/