jQuery - 从类的元素中获取属性值的列表 [英] jQuery - get a list of values of an attribute from elements of a class

问题描述

我有一个类 .object，它有一个名为 level 的属性.我想在页面上获取 level 的所有不同值的列表，以便我可以选择最高的值.

I have a class .object which has an attribute called level. I want to get a list of all the different values of level on the page so I can select the highest one.

如果我这样做:

$(".object").attr("level")

...这会给我一个作为级别属性值的值列表吗?我怀疑不是，但是你怎么做这样的事情?

... will that get me a list of values that are the values of the level attribute? I suspect not, but then how do you do something like that?

注意:我不想像更常见的那样选择要操作的 HTML 对象，而是想选择属性的值.

Note: I don't want to select an HTML object for manipulation as is more common, rather I want to select values of the attribute.

为了获得最高的级别"，我这样做了，但它似乎不起作用.我现在将尝试其他建议的方法.

In order to get the highest "level" I have done this, but it doesn't seem to work. I will try the other suggested method now.

var highLevel=0;
$.each(".object[level]", function(i, value) {
   if (value>highLevel) {
       highLevel=value;
   }
});

alert(highLevel);

推荐答案

$(".object").attr("level") 只会返回第一个的属性.object 元素.

$(".object").attr("level") will just return the attribute of first the first .object element.

这将为您提供所有 level 的数组:

This will get you an array of all levels:

var list = $(".object").map(function(){return $(this).attr("level");}).get();

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