Common tools and examples of WeChat applets

This article mainly introduces the details of common tool classes for small programs and related information about instances. For more information, see Explanation of common mini-program tools

Preface:

Many tool classes util. js will be used as a small program, which are recorded here for normal use (Ps: It is recommended to view through the directory)

-Get date (format)

function formatTime(date) { var year = date.getFullYear() var month = date.getMonth() + 1 var day = date.getDate() var hour = date.getHours() var minute = date.getMinutes() var second = date.getSeconds() return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')}function formatNumber(n) { n = n.toString() return n[1] ? n : '0' + n}

-Get the dynamic update time

Function getDateDiff (dateTimeStamp) {var minute = 1000*60; var hour = minute * 60; var day = hour * 24; var halfamonth = day * 15; var month = day * 30; var year = day * 365; var now = new Date (). getTime (); var diffValue = now-dateTimeStamp; if (diffValue <0) {// invalid operation return 'data error';} var yearC = diffValue/year; var monthC = diffValue/month; var weekC = diffValue/(7 * day); var dayC = diffValue/day; var hourC = diffValue/hour; var minC = diffValue/minute; if (yearC> = 1) {result = parseInt (yearC) + 'years ago ';} else if (monthC> = 1) {result = parseInt (monthC) + 'months ago ';} else if (weekC> = 1) {result = parseInt (weekC) + 'weeks ago';} else if (dayC> = 1) {result = parseInt (dayC) + 'day before ';} else if (hourC> = 1) {result = parseInt (hourC) + 'hour before ';} else if (minC> = 5) {result = parseInt (minC) + 'minute ago ';} else {result = 'Just posted';} return result ;}

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