Leverage JavaScript E4X to cleverly rename specific XML elements

Currently, I am using JavaScript to manipulate XML without involving the DOM in a browser context. I need assistance with creating an E4X expression that can rename a list of tags based on a given substring. The challenge is that I may not know the exact tag names beforehand.

Here is a hypothetical scenario:

someXML = <Favourites>
              <JillFaveColour>Blue</JillFaveColour>
              <JillFaveCandy>Smarties</JillFaveCandy>
              <JillFaveFlower>Rose</JillFaveFlower>
          <Favourites>

My objective is to transform the XML into:

<Favourites>
    <GaryFaveColour>Blue</GaryFaveColour>
    <GaryFaveCandy>Smarties</GaryFaveCandy>
    <GaryFaveFlower>Rose</GaryFaveFlower>
<Favourites>

The catch is that the number of tags can vary and their full names are unknown. They should only be renamed if they contain a specific substring (in this case, "Jill").

javascriptxmle4xmirth

Answer №1

To change the name of elements, you can use the setLocalName(newName) method. If you are unsure of all the tag names in advance, you can loop through the elements and access their tag names using the localName() method (only if 

node.length() === 1 && node.nodeKind() === "element"
).

Answer №2

For example:

let animals = someData.animals();
for (let i = animals.length; i-->0;)
    if (animals[i].type==='dog')
        animal.setName(animal.name().split('Buddy').join('Max'));

Answer №3

Have you thought about manually adding and then removing those nodes?

//xmlObj represents your XML object
xmlObj['Favorites']['JohnFavoriteColor'] = xmlObj['Favorites']['JaneFavoriteColor'];
xmlObj['Favorites']['JohnFavoriteFood'] = xmlObj['Favorites']['JaneFavoriteFood'];
xmlObj['Favorites']['JohnFavoriteAnimal'] = xmlObj['Favorites']['JaneFavoriteAnimal'];

//delete Jane's favorites
delete xmlObj['Favorites']['JaneFavoriteColor'];
delete xmlObj['Favorites']['JaneFavoriteFood'];
delete xmlObj['Favorites']['JaneFavoriteAnimal'];

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