在javascript中附近的兄弟姐妹 [英] get nearby sibling in javascript

问题描述

我有一个DIV结构，在某个地方有一个锚标签。点击链接后，我需要获取父 div 中另一个 span 元素的值，然后执行某些操作， （说，提醒它）。

html是这样的：

  ... 
< div id =div1> 
 ... 
< span>这是reqd< / span> 
 ... 
< a href =＃>点击我< / a> 
 ... 
< / div> 
 ... 
  

整个 div 在页面中重复多次。
当我点击 a 我想提醒这是reqd。

可以像这样搜索HTML吗？

解决方案

单跨元件，应该很简单。只需点击链接即可调用myFunction（this），并按如下操作DOM：

  function myFunction（currObj）{
 var parentofSelected = currObj.parentNode; //给父DIV 
 
 var children = parentofSelected.childNodes; 
 for（var i = 0; i< children.length; i ++）{
 if（children [i] .tagName =span）{
 myValue = children [i]值; 
 break; 
} 
} 
 alert（myValue）; //只是为了测试
 
} // end function 
  

希望这个工程。它为我做了！

I have a certain DIV structure with an anchor tag in between somewhere. On click of the link, I need to fetch the value of another span element within the parent div and do something, (say, alert it).

The html is like this :

...
<div id="div1">
  ...
  <span>This is reqd</span>
  ...
  <a href="#">Click Me </a>
  ...
</div>
...

The entire div is repeated many times in the page. When I click on the a I want to alert "This is reqd".

Can the HTML be searched like this?

解决方案

For a single span element, it should be pretty easy,. Just call a myFunction(this) on click of the link and manipulate the DOM like this :

function myFunction(currObj){
var parentofSelected = currObj.parentNode; // gives the parent DIV

var children = parentofSelected.childNodes;
for (var i=0; i < children.length; i++) {
    if (children[i].tagName = "span") {
        myValue= children[i].value;
        break;
    }
}
alert(myValue); // just to test

 } // end function

Hope this works. It did for me !!

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