Why is this search form not submitting when button is clicked?

Question

I've got a search form on my page, which works perfectly fine when I enter the text and press enter, however it doesn't submit anything when .submit-search button is clicked, why is that? note: value="2" is there for specific use.

<form action="<?php echo home_url(); ?>" class="search-form" method="get">
<input class="search-input" type="text" value="Search..." name="s" id="s" 
onblur="if(this.value == '') this.value = 'Search...'" 
onfocus="if(this.value == 'Search...') this.value = ''">
<input class="submit-search" type="button" value="2">
</form>

Answer 1

I suggest you use <input type="submit" /> or <button type="submit" />.

<input type="button" /> is valid but doesn't submit the form by default (without you adding any ajax/js magic to it.