js日期点击选择 当前日期的前或者后的每一天

function change(type) { var nowTimestamp = Date.parse(new Date()); var year = document.getElementById('year').innerHTML; var month = document.getElementById('month').innerHTML; var day = document.getElementById('day').innerHTML; var timestamp = Date.parse(new Date(year + '-' + month + '-' + day)); if (type == 'prev') { var changeTimestamp = timestamp - 24 * 60 * 60 * 1000; $('#right').addClass('bagright') } else { var changeTimestamp = timestamp + 24 * 60 * 60 * 1000; if (changeTimestamp > nowTimestamp) { $('#right').removeClass('bagright') return; } else { $('#right').addClass('bagright') } } var date = new Date(changeTimestamp); var changeYear = date.getFullYear(); var changeMonth = setDate(date.getMonth() + 1); var changeDay = setDate(date.getDate()); document.getElementById('year').innerHTML = changeYear; document.getElementById('month').innerHTML = changeMonth; document.getElementById('day').innerHTML = changeDay; changeDate = changeYear + '-' + changeMonth + '-' + changeDay; timeStr = changeYear + changeMonth + changeDay; } //1-9的时候前边加上0 function setDate(date) { if (date < 10) { date = '0' + date; } return date; }