javascript - 查找包含字符串的元素并替换同级元素

Question

所以，我有一个网站，并且只有一些类可以用来隔离我想要编辑的元素。我需要在 html 中找到一个包含特定字符串的元素，并替换它的同级 html 之一。无论如何，这是我得到的代码:

if((".user.info").html().indexOf(vaUID[index]) >= 0) {
    $("a.user.info").each(function (index2, obj) {
        if($(this).html().indexOf(vaUID[index]) >= 0) {
            $(this).siblings('.registered').html('<div class="registered"><a href=http://www.twitch.tv/'+users[index]+ '>currently streaming' + data.stream.game + '</a></div>');
        }
    });
}

这是起始 html:

<div class="user first">
    <div class="element_avatar simple small  "><a href="http://www.cnr-clan.com/profile/xxxxxx" data-minitooltip="username"><img src="http://assets-cloud.enjin.com/users/xxxxxx/avatar/small.xxxxxx.png"></a></div>
    <div class="info">
        <a href="http://www.cnr-clan.com/profile/xxxxxx" class="element_username tag-xxxxxx">username</a>
        <span class="nameicons">
            <!--Irrelevant Excess Code-->
        </span>
        <div class="registered">currently browsing</div>
    </div>
    <div class="clearing"><!--  --></div>
</div>

我想要的结果是:

<div class="user first">
    <div class="element_avatar simple small  "><a href="http://www.cnr-clan.com/profile/xxxxxx" data-minitooltip="username"><img src="http://assets-cloud.enjin.com/users/2219573/avatar/small.xxxxxx.png"></a></div>
    <div class="info">
        <a href="http://www.cnr-clan.com/profile/xxxxxx" class="element_username tag-xxxxxx">username</a>
        <span class="nameicons">
            <!--Irrelevant Excess Code-->
        </span>
        <div class="registered"><a href='http://www.twitch.tv/username'>currently streaming gamename</a></div>
    </div>
    <div class="clearing"><!--  --></div>
</div>

请记住，我在同一个类中有几个这样的代码块。 vaUID[index] 的示例值为 xxxxxx。

Answer 1

我建议，基于该 HTML:

// selects the appropriate elements:
$('.user .info a.element_username')
    // filters that collection:
    .filter(function(){
        // retains only those in which this assessment results as true/truthy
        return $.trim($(this).text()) === 'username';
    })
    // searches amongst those retained-elements' sibling for those that match
    // the passed-selector:
    .siblings('div.registered')
    // wraps the contents of those elements with the supplied HTML:
    .wrapInner('<a href="http://www.twitch.tv/username"></a>');

JS Fiddle demo .

上述 filter() 条件将仅保留那些文本内容与 'username' 字符串精确匹配的元素 (demo to highlight that problem )；要保留那些仅包含该字符串的内容，您可以将 filter() 修改为:

return $(this).text().indexOf('username') > -1; // this is case-sensitive

JS Fiddle demo .

或者:

return $(this).text().toLowerCase().indexOf('username') > -1; // this is case-insensitive

JS Fiddle demo .

引用文献:

• filter() .
• jQuery.trim() .
• siblings() .
• text() .
• wrapInner() .