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Posted By

rolandog on 07/09/06


Tagged

node delete DOM iteration everything twin functions


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luman


Iterative Node Deletion

 / Published in: JavaScript
 

This script makes it possible to delete every childNodes, childNodes.childNodes, childNodes.childNodes.childNodes and so on. Includes example functions for deleting all childNodes, firstChild and lastChild from an 'id'. It uses twin functions that call each other until everything is removed.

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  1. function killsChildNodes(an_element) {
  2. 	while (an_element.hasChildNodes()) {
  3. 		if (!an_element.firstChild.hasChildNodes()) {
  4. 			var k = an_element.firstChild;
  5. 			an_element.removeChild(k);
  6. 		} else {
  7. 			killsChildNodes2(an_element.firstChild);
  8. 		}
  9. 	}
  10. }
  11. function killsChildNodes2(another_element) {
  12. 	while (another_element.hasChildNodes()) {
  13. 		if (!another_element.firstChild.hasChildNodes()) {
  14. 			var k2 = another_element.firstChild;
  15. 			another_element.removeChild(k2);
  16. 		} else {
  17. 			killsChildNodes(another_element.firstChild);
  18. 		}
  19. 	}
  20. }
  21. function killAllChildNodesFrom(bob) {
  22. 	if(document.getElementById(bob).hasChildNodes()) {
  23. 		killsChildNodes(document.getElementById(bob));
  24. 	}
  25. }
  26. function killFirstChildNodeFrom(bob) {
  27. 	if(document.getElementById(bob).hasChildNodes()) {
  28. 		killsChildNodes(document.getElementById(bob).firstChild);
  29. 		document.getElementById(bob).removeChild(document.getElementById(bob).firstChild);
  30. 	}
  31. }
  32. function killLastChildNodeFrom(bob) {
  33. 	if(document.getElementById(bob).hasChildNodes()) {
  34. 		killsChildNodes(document.getElementById(bob).lastChild);
  35. 		document.getElementById(bob).removeChild(document.getElementById(bob).lastChild);
  36. 	}
  37. }

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