如何将节点元素移动为其父元素中的第一个元素

Question

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id='parent'> <div>B</div> <div>C</div> <div onload='this.parentNode.prependChild();'>A</div> </div> 

I tried to move the <div>A</div> to the top of all child elements with inline script but didn't work with prependChild() , What is my mistake?

Answer 1

You can only attach the onload event handler to the body element. However, it is fairly simple to move the last child to be the first within its parent:

 $('#parent').prepend($('#parent > div:last-child')) 

 down vote favorite <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id='parent'> <div>B</div> <div>C</div> <div>A</div> </div> 

Answer 2

You can add javascript in the head section and have a window.onload over there. The following will place the element first in your parent div. This is vanilla javascript. Which will work even with jQuery... Your choice!

 window.onload = function() { var parent = document.getElementById("parent"); var elem = document.getElementById("thisone"); parent.prepend(elem); } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id='parent'> <div>B</div> <div>C</div> <div id="thisone">A</div> </div>