Table of Contents
Problems encountered
Code
Problems
Solution
Thinking about the program
Home Web Front-end JS Tutorial A series of problems and solutions when using datetime in js to front-end iOS

A series of problems and solutions when using datetime in js to front-end iOS

Jul 28, 2018 pm 01:59 PM

Requirements and ideas

A series of problems and solutions when using datetime in js to front-end iOS

The key point is this End time To be displayed Countdown time. The idea is to use the setTimeout() function.

Problems encountered

The date type passed from the database cannot be correctly parsed inIOS

Code

//倒计时函数  一秒钟执行一次
setInterval(daojishi,1000);
//倒计时函数   用each  遍历所有需要处理的时间
function daojishi(){
    $(".truetime").each(function(){
        var end= $(this).html();
        var end_on=formatStr(end);//解决ios手机不兼容问题
        var curtime=new Date();
        var endtime=new Date(end_on);
        var lefttime= parseInt((endtime.getTime()-curtime.getTime())/(1000));
        if (lefttime>0) {
            var day=parseInt(lefttime/(24*60*60));
            var hours=parseInt( (lefttime/(60*60))%24);
            var minutes=parseInt( (lefttime/(60))%60);
            var seconds=parseInt( (lefttime)%60);
            hours  =checkout(hours);
            minutes  =checkout(minutes);
            seconds  =checkout(seconds);
            var title =day+' 天 '+hours+' 小時 '+minutes+' 分 '+seconds+' 秒 ';
        }else{
            var title="时间结束"
        }
        $(this).next('span').html(title);
    });
};
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Problems

数据库拿出来的时间是  2016-06-08  这种时间iOS并不兼容 出现未定义的时间格式 所以用下面的函数转一下  成2016/06/08
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Solution

function formatStr(str) {
    str=str.replace(/-/g,"/");
};
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Thinking about the program

var curtime=new Date();
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Related articles:

JS IOS/iPhone Safari browser is not compatible with Date() in Javascript. How to solve the problem

Convert datetime type date and time into Chinese representation

Related videos:

Mobile front-end project practical video tutorial

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