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    湖南省株洲市
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<p></p>
<script>
    $(function() {
        var date1 = new Date("2019-02-08"); //大
        var date2 = new Date("2019-03-8"); //小
         $("p").html(Month_Date(date1, date2));
    }); 
</script>
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function Month_Date(date1, date2) {
    function getM(M, get_Y) {
        var date_M;
        switch (M) {
            case 01:
                date_M = 31;
                break;
            case 02:
                if (get_Y % 4 == 0 && get_Y % 4 !== 100 || get_Y % 400 == 0) {
                    date_M = 29;
                } else {
                    date_M = 28;
                }
                break;
            case 03:
                date_M = 31;
                break;
            case 04:
                date_M = 30;
                break;
            case 05:
                date_M = 31;
                break;
            case 06:
                date_M = 30;
                break;
            case 07:
                date_M = 31;
                break;
            case 08:
                date_M = 31;
                break;
            case 09:
                date_M = 30;
                break;
            case 10:
                date_M = 31;
                break;
            case 11:
                date_M = 30;
                break;
            case 12:
                date_M = 31;
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↑上面代码改变，会自动显示代码结果 jQuery调用版本：1.10.2
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日期月天算法

var date1=new date("2019-02-08");//大
var date2=new date("2019-03-8");//小

直接调用month_date(date1,date2)并传入两个日期参数 date1 >= date2  ，直接得出结果 ----    1月0天

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