Javascript xml document and find

Question

Let's say I have the following very simple XML fragment:

<assignmentOptions>
    <MessageCharacterLimit value="4000" type="integer"></MessageCharacterLimit>
</assignmentOptions>
<options>
    <MessageCharacterLimit value1="1000" type="integer"></MessageCharacterLimit>
    <MessageCharacterLimit value2="2000" type="integer"></MessageCharacterLimit>
</options>

How can I find all MessageCharacterLimit under <options>? MessageCharacterLimit is not unique, but options/MessageCharacterLimit is.

Thanks

baao · Accepted Answer · 2015-08-11 21:58:53Z

1

You can use querySelectorAll() for this:

var a = document.querySelectorAll('options > MessageCharacterLimit');
console.log(a)

<assignmentOptions>
    <MessageCharacterLimit value="4000" type="integer"></MessageCharacterLimit>
</assignmentOptions>
<options>
    <MessageCharacterLimit value1="1000" type="integer"></MessageCharacterLimit>
    <MessageCharacterLimit value2="2000" type="integer"></MessageCharacterLimit>
</options>

You may then loop over the collection you get like this:

var a = document.querySelectorAll('options > MessageCharacterLimit');
for (var i = 0; i<a.length; i++) {
    console.log(a[i].getAttribute('type'));
}

<assignmentOptions>
    <MessageCharacterLimit value="4000" type="integer"></MessageCharacterLimit>
</assignmentOptions>
<options>
    <MessageCharacterLimit value1="1000" type="integer"></MessageCharacterLimit>
    <MessageCharacterLimit value2="2000" type="integer"></MessageCharacterLimit>
</options>

answered Aug 11, 2015 at 21:58

baao

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1 Comment

Mark Over a year ago

Just curious. if I do this: $(a).each(function () { ...... }); then for the a that has just one element each function is called twice. Any idea?

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