javascript - How to check if value is not `blank` in this code using Java Script or jQuery? -


how check if value not blank in code using java script or jquery?

<select name="producttype" class="selectoption">     <option class="selectoption" value="blank">select something</option>     <option class="selectoption"  value="test1">test1</option>     <option class="selectoption"  value="test2">test2</option>     <option class="selectoption"  value="test3">test3</option> </select>

using jquery:

$(".selectoption").on("change", function() {     if ($(this).val() != "blank")         // });

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