前一天，后一天

function preDate(){<span style="white-space:pre"></span>var date = $("#selectDate").val();var d = new Date(date.replace(/-/g,   "/"));     d.setTime(d.getTime()-24*60*60*1000);    var s = d.getFullYear()+"-" + (d.getMonth()+1) + "-" + d.getDate();    $("#selectDate").val(s);    bindChart();}function nextDate(){var date = $("#selectDate").val();var d = new Date(date.replace(/-/g,   "/"));     d.setTime(d.getTime()+24*60*60*1000);    var s = d.getFullYear()+"-" + (d.getMonth()+1) + "-" + d.getDate();    $("#selectDate").val(s);    bindChart();}

传入参数为2014-10-17这种格式

得到前一天和后一天