Detailed example of jQuery getting the value of a field in the current row selected by the check box

Detailed example of jQuery getting the value of a field in the current row selected by the check box_

小云云

Release： 2017-12-29 09:15:48

Original

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This article mainly introduces jQuery to get the value of a field in the current row selected by the check box. Friends who need it can refer to it. I hope it can help everyone.

Without further ado, I will post the code directly for you. The specific code is as follows:

 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <title>js</title>
 </head>
<script src="js/jquery.js"></script>
<script language="javascript">
 function getTDtext() 
 {
 var a = document.getElementsByName("r");//获取所以复选框
//第一种方法：通过checked属性确定被选中的复选框的父节点，通过children[index]来取第index个子节点td的内容
/** for(var i=0;i<a.length;i++){
  if(a[i].checked){
    var tddata=a[i].parentNode.parentNode.children[1].innerHTML;
    alert(tddata);
  }
} **/
//第二种方法：通过checked属性确定被选中的复选框的父节点，遍历父节点下所以的子节点td，当td的name等于某值时，获取该td下的内容
for(var i=0;i<a.length;i++){
if(a[i].checked){
  var tddata=a[i].parentNode.parentNode;
  $(tddata).find("td").each(function(){
    if(this.getAttribute("name")=="z"){
      alert(this.innerHTML);
    }
  });
}
}
}
 </script>
 <body>
 <table id="test_table">
 <tr><td><input type="checkbox" name="r" value="1"></td><td name="z">a</td><td name="x">b</td></tr>
 <tr><td><input type="checkbox" name="r" value="2"></td><td name="z">b</td><td name="x">b</td></tr>
 <tr><td><input type="checkbox" name="r" value="3"></td><td name="z">c</td><td name="x">b</td></tr>
 <tr><td><input type="checkbox" name="r" value="4"></td><td name="z">d</td><td name="x">b</td></tr>
 <tr><td><input type="checkbox" name="r" value="5"></td><td name="z">e</td><td name="x">b</td></tr>
 <tr><td><input type="checkbox" name="r" value="6"></td><td name="z">f</td><td name="x">b</td></tr>
 </table>
 <input type="button" onclick="getTDtext()" value="button"/>
</body>
</html>

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