JavaScript代码: function counter(object){ var limit = $(object).attr('maxlength'); if($(object).next(".counter").val()==undefined){ $(object).after("<span class='counter'></span>/"+limit); } $(object).textlimit("span.counter",100); } Html代码: <input type="text" onkeypress="counter(this);" id="partnerinfoname" maxlength="100" />