jQuery if"this"包含 [英] jQuery if "this" contains

问题描述

我正在尝试将包含特定文本字符串的所有元素更改为红色.在我的示例中，我可以使子元素变为蓝色，但是我编写替换我"行的方式有些错误；红色不会发生变化.我注意到"contains"方法通常写为:contains，但我无法通过$(this)对其进行验证.

I'm trying to change any elements containing a particular text string to a red color. In my example I can get the child elements to become blue, but there's something about the way I've written the 'Replace Me' line that is incorrect; the red color change doesn't happen. I note that the "contains" method is usually written as :contains but I couldn't get that to validate with $(this).

$('#main-content-panel .entry').each(function() {
       $(this).css('color', 'blue');      
});         

$('#main-content-panel .entry').each(function() {
   if($(this).contains("Replace Me").length > 0) {
        $(this).css('color', 'red'); 
    }      
});

提琴: http://jsfiddle.net/zatHH/

推荐答案

:contains是选择器.要检查选择器是否适用于给定变量，可以使用 is :

:contains is a selector. To check if a selector applies to given variable, you can use is:

if($(this).is(':contains("Replace Me")')) 

在这种情况下，Vega的解决方案更干净.

However Vega's solution is cleaner in this case.

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