用 React.js+Egg.js 造轮子全栈开发旅游电商应用

download: 用 React.js+Egg.js 造轮子全栈开发旅游电商应用

取数组中的最小值和最大值
var arr = new Array();
arr[0] = 100;
arr[1] = 0;
arr[2] = 50;

var min = Math.min.apply(null, arr),
max = Math.max.apply(null, arr);
十三、取两个数组交集
/* finds the intersection of

two arrays in a simple fashion.
PARAMS
a - first array, must already be sorted
b - second array, must already be sorted
NOTES
Should have O(n) operations, where n is
n = MIN(a.length(), b.length())
*/
function arrayIntersection(a, b)
{
var ai=0, bi=0;
var result = new Array();

while( ai < a.length && bi < b.length )
{
if (a[ai] < b[bi] ){ ai++; }
else if (a[ai] > b[bi] ){ bi++; }
else / they're equal /
{
result.push(a[ai]);
ai++;
bi++;
}
}

return result;
}

console.log(arrayIntersection([1,2,3],[2,3,4,5,6]));//[2,3]
注释中已经说明了，传入的数组要已经排过序的。十四、统计一个字符串中某段子串出现的次数
var temp = "This is a string.";

var count = temp.match(/is/g).length;
十五、方法返回多个值
//One
var mValues= function(){
var a ="a";
var b = "b";
return [a, b];
};

var values= mValues();
var valOne= values[0];
var valTwo = values[1];

//Two
var mValues= function(){
var a= "a";
var b = "b";
return {
'a': a,
'b': b
};
};

var values= mValues();
var valOne= values.a;
var valTwo = values.b;
十六、Array迭代器
function createIterator(x) {
var i = 0;

 return function(){
   return x[i++];
};

}

var MMMArrEn=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
var MMMArr=["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"];
var WeekArrEn=["Sun","Mon","Tue","Web","Thu","Fri","Sat"];
var WeekArr=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];

var oNumber=time.Millisecond/1000;

if(format!=undefined && format.replace(/s/g,"").length>0){
    if(loc!=undefined && loc =="en"){
        MMMArr=MMMArrEn.slice(0);
        WeekArr=WeekArrEn.slice(0);
    }
    format=format
        .replace(/yyyy/ig,time.Year)
        .replace(/yyy/ig,time.Year)
        .replace(/yy/ig,time.TYear)
        .replace(/y/ig,time.TYear)
        .replace(/MMM/g,MMMArr[time.Month-1])
        .replace(/MM/g,time.TMonth)
        .replace(/M/g,time.Month)
        .replace(/dd/ig,time.TDay)
        .replace(/d/ig,time.Day)
        .replace(/HH/g,time.THour)
        .replace(/H/g,time.Hour)
        .replace(/hh/g,time.Thour)
        .replace(/h/g,time.hour)
        .replace(/mm/g,time.TMinute)
        .replace(/m/g,time.Minute)
        .replace(/ss/ig,time.TSecond)
        .replace(/s/ig,time.Second)
        .replace(/fff/ig,time.Millisecond)
        .replace(/ff/ig,oNumber.toFixed(2)*100)
        .replace(/f/ig,oNumber.toFixed(1)*10)
        .replace(/EEE/g,WeekArr[time.Week]);
}
else{
    format=time.Year+"-"+time.Month+"-"+time.Day+" "+time.Hour+":"+time.Minute+":"+time.Second;
}
return format;

}

用 React.js+Egg.js 造轮子 全栈开发旅游电商应用

download: 用 React.js+Egg.js 造轮子 全栈开发旅游电商应用

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用 React.js+Egg.js 造轮子全栈开发旅游电商应用

download: 用 React.js+Egg.js 造轮子全栈开发旅游电商应用