Blogger: How to Implement OR Operation Within b:if Block

AND

The AND condition can be implemented by stacking the b:if's.

For example:

<b:if cond='data:blog.pageType == "item"'> <b:if cond='data:blog.url != "post-URL"'> [...custom content...] <b:elseif cond='data:blog.url == "another-post-URL"' /> [...custom content -- inner b:if...] <b:else /> [...custom content -- inner b:if...] </b:if> <b:else /> [...custom content -- outer b:if...] </b:if>

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OR

The OR on the other hand, is done by actually placing OR operator, ||, or the keyword or within the b:if condition.

For example, we want to show custom content or executing script only on static page OR item (post):

<b:if cond='data:blog.pageType == "static_page" || data:blog.pageType == "item"'> [...custom content here...] </b:if>

OR:

<b:if cond='data:blog.pageType == "static_page" or data:blog.pageType == "item"'> [...custom content here...] </b:if>

We can put more than two conditions for the OR.

condition-1 || condition-2 || condition-3 || ... || condition-N

OR:

condition-1 or condition-2 or condition-3 or ... or condition-N

OR WE MIX THEM 😂

condition-1 || condition-2 or condition-3 or ... || condition-N

That actually works! But it will confuse yourself, thus I recommend to pick and consistently use either one, the pipes or the "or" keyword.

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That also applies to AND. We can stack them with more than two conditions.

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Related Matters

In latest Blogger XML, we can actually use the word or for OR operation and and for AND operation. This is a post about that.

For more reference regarding b:if and b:else, please try this post Blogger Conditional Tag — b:if and b:else.