jquery判断至少有一个checkbox被选中的方法

<form>  <!-- bunch of checkboxes like: -->  <input type="checkbox" ... >  <input type="checkbox" ... >  <!-- submit button, defaults to disabled -->  <input type="submit" value="submit"></form>

var checkboxes = $("input[type='checkbox']"),  submitButt = $("input[type='submit']");checkboxes.click(function() {  submitButt.attr("disabled", !checkboxes.is(":checked"));});