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  • 转:JS获取前七天的日期

    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="utf-8">
    <meta name="renderer" content="webkit">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <title>时间</title>
    </head>
    <body>
    <script>
    function getBeforeDate(n) {
    var n = n;
    var d = new Date();
    var year = d.getFullYear();
    var mon = d.getMonth() + 1;
    var day = d.getDate();
    if (day <= n) {
    if (mon > 1) {
    mon = mon - 1;
    }
    else {
    year = year - 1;
    mon = 12;
    }
    }
    d.setDate(d.getDate() - n);
    year = d.getFullYear();
    mon = d.getMonth() + 1;
    day = d.getDate();
    s = year + "-" + (mon < 10 ? ('0' + mon) : mon) + "-" + (day < 10 ? ('0' + day) : day);
    return s;
    }
    console.log(getBeforeDate(1));//昨天的日期

    console.log(getBeforeDate(2));

    console.log(getBeforeDate(3));

    console.log(getBeforeDate(4));

    console.log(getBeforeDate(5));

    console.log(getBeforeDate(6));
    console.log(getBeforeDate(7));//前七天的日期
    </script>
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/Ly426/p/9768662.html
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