This time I will show you how to use jQuery to select and operate a table, what are the precautions for using jQuery to select and operate a table, the following is a practical case, let’s take a look .
Compare the contents of table. Determine whether to merge cells:
tr = $("#printPage tr").length;// 获取当前表格中tr的个数 var mark = 0; //要合并的单元格数 var index = 0; //起始行数 /* * 要合并单元格,需要存储两个参数, * 1,开始合并的单元格的第一行的行数, * 2.要合并的单元格的个数 **/ console.log(tr); //判断 若只有一行数据,则不做调整 if(tr <= 2){ }else{ //var i=1 比较当前的tr和上一个tr的值 for(var i=0;i < tr ;i++){ var ford = $("#printPage tr:gt(0):eq("+i+") td:eq(0)").text(); //根据下标获取单元格的值 // tr:gt(0) 从下标0 开始获取 // tr:gt(0):eq( i ) :i 标识 当前行的下标 ,0 开始 // td:eq(0) 当前行的第一个单元格,下标从0开始 var behind = $("#printPage tr:gt(0):eq("+(parseInt(i)+1)+") td:eq(0)").text(); if(ford == behind){ $("#printPage tr:gt(0):eq("+(parseInt(i)+1)+") td:eq(0)").hide(); mark = mark +1; }else if(ford != behind){ //如果值不匹配则遍历到不同种的分类,将旧分类隐藏 index = i-mark; $("#printPage tr:gt(0):eq("+index+") td:eq(0)").attr("rowspan",mark+1);//+1 操作标识,将当前的行加入到隐藏 //rowspan 列上横跨, colspan 行上横跨 //后面的参数,表示横跨的单元格个数, //合并单元格就是将其他的单元格隐藏(hide),或删除(remove)。 //将一个单元格的rowspan 或colsspan 加大 mark = 0; $("#printPage tr:gt(0):eq("+(parseInt(i))+") td:eq(0)").hide(); } } }
Final effect:
I believe you have mastered the method after reading the case in this article. Please pay attention for more exciting things. Other related articles on php Chinese website!
Recommended reading:
jquery dynamically merge cells
JS realizes the merging of the same cells in the table
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