addClass() and removeClass() are very useful methods from jquery. addClass() method used to add one or more css class in selected element while removeClass() is used to remove class.
I used addClass() to show block as selected and removeClass() method to deselect block that was previously clicked, blocks were dynamically created. Following is code.
<script>
$(function(){
$(".blocks").click(function() {
var ids;
var previous = "";
previous = $("#previous").val();
if(previous !=""){
$(previous).removeClass("sel");
}
ids = $(this).attr("id");
$("#"+ids).addClass('sel');
$("#previous").val("#"+ids);
});
});
</script>
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