js常用小方法

function format(timestamp) {
    // 获取时间戳 Date.parse(new Date());
    //timestamp是整数，否则要parseInt转换,不会出现少个0的情况
    var time = new Date(timestamp);
    var year = time.getFullYear();
    var month = time.getMonth() + 1;
    var date = time.getDate();
    var hours = time.getHours();
    var minutes = time.getMinutes();
    var seconds = time.getSeconds();
    return year + ‘-‘ + add0(month) + ‘-‘ + add0(date) + ‘ ‘ + add0(hours) + ‘:‘ + add0(minutes) + ‘:‘ + add0(seconds);
}
//当月份，日期，时分秒小于10时前面加0
function add0(m) {
    return m < 10 ? ‘0‘ + m : m
}

// 出现弹出框时
$("body").css("overflow", "hidden");
$(‘body‘).bind("touchmove", function (e) {
      e.preventDefault && e.preventDefault();
 });
//关闭弹出框时
$("body").css("overflow-y", "auto");
$("body").unbind("touchmove");

<div class="award-items-state">
   <ul id="award-items-con" class="award-items-con"></ul>
   <ul id="award-items-con-clone" class="award-items-con"></ul>
</div>

.award-items-state {
    width: 5.5rem;
    height: 1.8rem;
    overflow: hidden;
    margin: 0 auto;
    line-height: 1.2;
}

var state = $(‘.award-items-state‘);//获取滚动内容的外部容器，需要定高，超出隐藏
var con = $(‘#award-items-con‘);// 滚动内容的容器，滚动的数据
var con_clone = $(‘#award-items-con-clone‘); // 存放复制内容的容器

function listScroll() {
//state.scrollTop() ：该元素中的内容向上卷进去的高度
//con.get(0).offsetHeight：该元素的整体高度
    if (state.scrollTop() >= con.get(0).offsetHeight) {
        state.scrollTop(0);
    } else {
        state.scrollTop(state.scrollTop() + 1);
    }
}

//使用setInterval 实现滚动效果 
setInterval(listScroll, 40);

<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="cache-control" content="no-cache"/>
<meta http-equiv="expires" content="0"/>
<meta http-equiv="keywords" content=""/>
<meta http-equiv="description" content=""/>

        $("input[name=‘tourism‘]").change(function () {
            var tourism_val = $("input[name=‘tourism‘]:checked").val();
            console.log(‘选中的值：‘ + tourism_val);
        })

var str = ‘  会捕鼠的鱼  ‘;
var other = $.trim(str);

        // button，input 禁用
        $("#submit-question").attr(‘disabled‘, true);
        // button，input 启用
        $("#submit-question").attr(‘disabled‘, false);

var other = ‘a,b，c;d；‘
industry = other.replace(/(,)|(，)|(;)|(；)/g, "-");

var os = function () {
                var ua = navigator.userAgent.toLowerCase(),
                    isAndroid = /(?:android)/.test(ua),
                    isTablet = /(?:ipad|playbook)/.test(ua) || (isAndroid && !/(?:mobile)/.test(ua)),
                    isPhone = /(?:iphone)/.test(ua) && !isTablet,
                    isPc = !isPhone && !isAndroid && !isTablet;
                return {
                    isTablet: isTablet,
                    isPhone: isPhone,
                    isAndroid: isAndroid,
                    isPc: isPc
                };
            }();
console.log(os);

        var isPhone6p = (function () {
            var h = window.innerHeight,
                w = window.innerWidth,
                ua = navigator.userAgent.toLowerCase(),
                isP6p = false;
            if (ua.match(/mobile/i) !== null && ua.match(/iphone/i) !== null && ( h > w ? (Math.abs(w - 414) < 10 && h <= 736) : (Math.abs(w - 736) < 10) && h <= 414)) {
                isP6p = true;
            }
            return isP6p;
        })();

            var html = document.querySelector("html");
            var    rem = html.offsetWidth / 7.5;
            html.style.fontSize = rem + "px";