A jQuery Selector is a function which makes use of expressions to find out matching elements from a DOM based on the given criteria. All type of selectors available in jQuery, always start with the dollar sign and parentheses: $(). Some selectors are following. (1) * $("*") Selects All elements (2) #id $("#lastname") Selects The element with id="lastname" (3) .class $(".intro") Selects All elements with class="intro" (4) .class,.class $(".intro,.demo") Selects All elements with the class "intro" or "demo" (5) element $("p") Selects All

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