【前端常用的函数】格式化时间取url问号后的参数检查字段是否为空

短命女 2022-11-21 14:43 120阅读 0赞

releaseTime: function(t) {
            let time = t*1000
            let diff = dayjs().diff(dayjs(time), 'second')
            let diffTime = ''
            if(diff <= 3600) {
                diffTime = `${dayjs().diff(dayjs(time), 'minute')}分钟前`
            }else if(3600 < diff && diff <= 3600*24) {
                diffTime = `${dayjs().diff(dayjs(time), 'hour')}小时前`
            }else if(3600*24 < diff && diff <= 3600*72) {
                diffTime = `${dayjs().diff(dayjs(time), 'day')}天前`
            }else {
                diffTime = dayjs(time).format('YYYY-MM-DD')
            }
            return diffTime
        },

//将以秒为单位的时间变成“00:00:00”格式的字符串
        function getTimeStr(time) {
            var h = Math.floor(time/3600);
            var m = Math.floor(time%3600/60);
            var s = Math.floor(time%60);
            h = h>=10?h:"0"+h;
            m = m>=10?m:"0"+m;
            s = s>=10?s:"0"+s;
            return h+":"+m+":"+s;

const isNone  = function (e) { //检查字段是否为空包括 ,[] ,null ,undefined,'', {}, '0', 0
        let isNt = e === '0' || e === 0 || e === '' || e === null || e === undefined || (Array.isArray(e)&&e.length === 0) || JSON.stringify(e)==="{}";
         return isNt;
    }

function checkPhone(phone){ ///验证电话号码
            return /^1[3456789]\d{9}$/.test(phone)
        }

对数组某属性进行排序

compare(property) {
          return function(obj1, obj2) {
            var value1 = obj1[property];
            var value2 = obj2[property];
            return value1 - value2; // 升序
          };
        },
        test() {
          let infoObj = [
            { age: 322, name: "wadw", test: "ad" },
            { age: 0, name: "ww", test: "ad" },
            { age: 22, name: "wadw", test: "ad" },
          ];
          console.log(infoObj.sort(this.compare("age")));
        },

随机10位字母和数字的组合

ranDomString(len){
    				var a = "";
    			    len = len || 32;
    			    var $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; // 默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1
    			    var maxPos = $chars.length;
    			    var pwd = '';
    			    var num = '';
    			    for (var i = 0; i < len; i++) {
    			        pwd += $chars.charAt(Math.floor(Math.random() * maxPos));
    			        num+=Math.floor(Math.random()*10);
    			    }
    			    pwd.toLowerCase();
    			    a = pwd+num;
    			    return pwd;
    			},