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jQuery exists function
jQuery.fn.exists = function(fn) {
if(this.length>0) {
var f = arguments[0];
arguments[0] = function(e) {
fn.apply( this, arguments );
return fn ? this.bind(name, fn) : this.trigger(name);
} else {
return this.length>0;
// To use simply write the following:
$(element).exists(function() {
$(this) // do something;
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