使用jquery根据td的No设置td的宽度 [英] Set width of td depending on No of td using jquery

查看:214
本文介绍了使用jquery根据td的No设置td的宽度的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有几个网页,其中包含不同数量的不同数量的表格。

I have several web pages with different amount of tables with different amount of columns.

我正在网上寻找一个获得列数的jquery spinet的表格和根据列数将定义每列的宽度。

I was looking on the net for a jquery spinet which gets the number of columns of the table and depending on the number of columns will define the width of each column.

前。

  if (noOfTdOnTable == 2) {
     tdWidth = "50%";
    }
    if (noOfTdOnTable == 3) {
      td1Width = "40%";
      td2Width = "40%";
      td3Width = "20%";
    }
    if (noOfTdOnTable == 4) {
      td1Width = "35%";
      td2Width = "25%";
      td3Width = "15%";
      td4Width = "15%";
    }

更新

使用我给出的唯一答案我现在有这个,但只有在页面上有一个表格时才有效,当有两列时我无法弄清楚如何申请。

Using the only answer I was given I have this at the moment but only works when there is one table on the page and I could not figure out how to apply when there are two columns.

        var num = $("table > td").length;


    if (num % 4 == 0) {
        $("table  > td:eq(0)").css("width", "50%");
        $("table > td:eq(1)").css("width", "30%");
        $("table > td:eq(2)").css("width", "10%");
        $("table > td:eq(3)").css("width", "10%");
    }
    if (num % 3 == 0) {
        $("table > td:eq(0)").css("width", "50%");
        $("table > td:eq(1)").css("width", "40%");
        $("table > td:eq(2)").css("width", "10%");
    }

这是html的一个例子,但代码将适用于很多不同表格的页面,但所有表格都有2,3或4列。

This is an example of the html, but the code will apply to lots of pages with different No of Tables but all tables will have either 2,3 or 4 columns.

<html>    
    <table>
           <tr>
               <td>text</td>
               <td>text</td>
               <td>text</td>
          </tr>
    </table>

    <table>
           <tr>
               <td>text</td>
               <td>text</td>
          </tr>
    </table>

    <table>
           <tr>
               <td>text</td>
               <td>text</td>
               <td>text</td>
               <td>text</td>
          </tr>
    </table>
</html>


推荐答案

获取列数:

var num = $("#table > tr > td").length;

指定宽度:

$("#table > tr > td").width(w + "px");

我希望这就是你要找的东西

I hope this was what you were looking for

修改

指定特定列的宽度:

//如果你为每个td指定了一个id

//if you've specified an id to each td

$("#td1").width(td1Width+"px");

//如果您只是使用类来识别它们

//if you just use classes to identify them

$("td.td1", "#table1").width(td1Width+"px");

我还建议你研究 find()结束()以有效的方式选择列。因为进行 $()调用是一项更昂贵的操作:

I would also recommend you to look into find() and end() to select columns in an efficient way. since making a $() call is a more expensive operation:

$("#table1").find("#td1").width(td1Width+"px").end().find("#td2")...

编辑2

尝试这样做

$("table > tr > td:eq(0)").css("width", "50%");

甚至更好

$("table > tr > td").eq(0).css("width", "50%").end()
                    .eq(1).css(...etc;

table将选择页面上的所有表格;使用id或class确定您需要的表格。

"table" will select all tables on the page; use id or class to identify which table you require.

编辑3(最终!!)

好的,现在我可以看到所有代码我可以给出更好的答案。试试这个:

Ok, now i can see all the code i can give a better answer. try this:

var num;
var $tds;
$("table").each(function(i, t) {
   $tds = $("td", t);
   num = $tds.length;

   if (num % 4 == 0) {
        $tds.eq(0).css("width", "50%").end()
            .eq(1).css("width", "30%").end()
            .eq(2).css("width", "10%").end()
            .eq(3).css("width", "10%");
    }
    if (num % 3 == 0) {
        //etc
    }
});

我希望这是一个更好的答案:)

I hope this is a better answer :)

这篇关于使用jquery根据td的No设置td的宽度的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆