Uncaught SyntaxError: missing ) after argument lis
Since you are passing a string literal as the function parameter, you need to enclose it in quotes
<input id="CHAMPARAN_EAST" name="CHAMPARAN EAST" onclick="SearchDistict('CHAMPARAN EAST');" type="checkbox" value="34">
Server side
<input id="<%=d.DistrictName %>" name="<%=d.DistrictName %>" onclick="SearchDistict('<%= d.DistrictName%>');" type="checkbox" value="<%=d.DistrictId %>"><%=d.DistrictName %>