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Question

Use XPath to select an element that doesn't have an img tag as a child.

Answer 1

+2 A:

//h1[count(img) = 0]

I assume this is for XHTML, otherwise no XPath.

xcut 2010-01-02 23:16:50

This works if the img tag is a direct child of <h1>. Is it possible to check if there is no img tag at any level within the h1 tag?

Pheter 2010-01-02 23:23:48

Answer 2

+3 A:

You can use the not() function:

//h1[not(descendant::img)]

Lukáš Lalinský 2010-01-02 23:21:17

This appears to be the cleanest solution, but it will not check if an img tag exists that is a child of a child of an h1 tag. Is it possible to check recursively through each child of the h1 tag and their children to ensure that there is no img tag?

Pheter 2010-01-02 23:25:39

Well, the `not()` argument is also just a XPath, you can use anything there. Updated the answer.

Lukáš Lalinský 2010-01-02 23:27:45

Thanks, your updated solution is just what I was looking for but Andrew Arnott beat you to it :P

Pheter 2010-01-02 23:30:23

Answer 3

A:

//h1[count(img) = 0]

runrunraygun 2010-01-02 23:22:40

Answer 4

+6 A:

Use the not operator and the descendent axis to catch h1 tags without even a distant img child.

//h1[not(descendant::img)]

Andrew Arnott 2010-01-02 23:26:38

Answer 5

A:

To find an h1 element with no img child:

//h1[not(img)]

To find an h1 element with no img descendant:

//h1[not(.//img)]

or

//h1[not(descendant::img)]

which might be easier to understand when reading your code.

Robert Rossney 2010-01-02 23:28:16

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Use XPath to select an element that doesn't have an img tag as a child.

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