jQuery：计算表列中的特定字符 [英] jQuery: Count specific character in a table column

问题描述

我有一个HTML表，每行有两列。第一列是大写字母，第二列是品牌名称，如下所示：

I have a HTML table where each row has two columns. First column is a capital letter and the second one is a brand name, like so:

A |亚马逊

A | Apple

A | Apple

B |宝马

C |香奈儿

等。但是，只要有两个品牌名称具有相同的首字母大写字母，我希望该表格如下所示：

etc. But whenever there are two brand names that has the same first capital letter I would like the table to look like this:

A |亚马逊

     | Apple

    | Apple

B |宝马

C |香奈儿

换句话说，如果每个大写字母都有多个实例，我只想显示第一个。如果我将一个类应用到第一列，是否有一种方法可以使用jQuery实现这一点？

In other words, if there are more than one instance of each capital letter I would like to display only the first one. If I applied a class to the first column, is there a way I could achieve this using jQuery?

推荐答案

你可以这样做使用 each（）函数（假设您的第一列的类是 leftCol ）：

You can do that with the each() function (assuming the class of your first column is leftCol):

$(document).ready(function() {
    var lastLetter = "";
    $(".leftCol").each(function() {
        var $this = $(this);
        var text = $this.text();
        if (text != lastLetter) {
            lastLetter = text;
        } else {
            $this.text("");
        }
    });
});

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