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How to use jQuery to select and operate table

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php中世界最好的语言Original
2018-03-15 13:38:061531browse

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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