What is b:if? How do I make it return true if it's home page?

I came across the b:if argument in Blogger, I'm not to sure how to use it. I need to make a condition return true if i开发者_开发知识库t's the front page. How do I do it?

Thanks

<b:if> is a so called widget tag. See the complete list of widget tags in the Blogger help pages. For the values of the condition you can use layout data tags.

For the detection for the front page, there are at least two possibilities:

<b:if cond='data:blog.pageName == ""'>
  <!-- Place markup for the front page and archives here -->
<b:else/>
  <!-- Place markup for posts here -->
</b:if>

Alternative:

<b:if cond='data:blog.pageType == "item"'>
  <!-- Place markup for the posts here -->
<b:else/>
  <!-- Place markup for front page and archive here -->
</b:if>

Have look at an example to customize the page title for search engine optimization.