Advanced Search

Object paternity

/ Published in: Other
Save to your folder(s)

Expand | Embed | Plain Text

Copy this code and paste it in your HTML 
  1.  
  2. // relationship of object 1 to object 2
  3. function objectPaternity(obj1, obj2) {
  4.  // given an object this function returns 'child' if obj1 is a child of obj2
  5.  // and 'parent' if obj1 is a parent of obj2 - then 'no' if neither
  6.  var relationship = 'no';
  7.  var currentElement = obj1;
  8.  
  9.  while((typeof currentElement.parentNode != 'undefined') && (currentElement != document.body)) {
  10.   // first cycle through all the parent elements of object 1 to see if object 2 is one of them
  11.   if(currentElement.parentNode == obj2) {
  12.    relationship = 'child';
  13.   }
  14.   // walk up the tree and try again
  15.   currentElement = currentElement.parentNode;
  16.  }
  17.  // if object 1 is not a child of object 2 then we test the other way arround
  18.  if(relationship == 'no') {
  19.   currentElement = obj2;
  20.   while((typeof currentElement.parentNode != 'undefined') && (currentElement != document.body)) {
  21.    // now cycle through all the parent elements of object 2 to see if object 1 is one of them
  22.    if(currentElement.parentNode == obj1) {
  23.     relationship = 'parent';
  24.    }
  25.    // walk up the tree and try again
  26.    currentElement = currentElement.parentNode;
  27.   }
  28.  }
  29.  return relationship;
  30. }
  31.  

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.