!function(){
function n(n,e,t){
return n.getAttribute(e)||t
}
function e(n){
return document.getElementsByTagName(n)
}
function t(){
var t=e("script"),o=t.length,i=t[o-1];
return{
l:o,z:n(i,"zIndex",-1),o:n(i,"opacity",.5),c:n(i,"color","0,0,0"),n:n(i,"count",99)
}
}
function o(){
a=m.width=window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth,
c=m.height=window.innerHeight||document.documentElement.clientHeight||document.body.clientHeight
}
function i(){
r.clearRect(0,0,a,c);
var n,e,t,o,m,l;
s.forEach(function(i,x){
for(i.x+=i.xa,i.y+=i.ya,i.xa*=i.x>a||i.x<0?-1:1,i.ya*=i.y>c||i.y<0?-1:1,r.fillRect(i.x-.5,i.y-.5,1,1),e=x+1;e null!==n.x&&null!==n.y&&(o=i.x-n.x,m=i.y-n.y, l=o*o+m*m,l t=(n.max-l)/n.max,r.beginPath(),r.lineWidth=t/2,r.strokeStyle="rgba("+d.c+","+(t+.2)+")",r.moveTo(i.x,i.y),r.lineTo(n.x,n.y),r.stroke())) }), x(i) } var a,c,u,m=document.createElement("canvas"), d=t(),l="c_n"+d.l,r=m.getContext("2d"), x=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame|| function(n){ window.setTimeout(n,1e3/45) }, w=Math.random,y={x:null,y:null,max:2e4};m.id=l,m.style.cssText="position:fixed;top:0;left:0;z-index:"+d.z+";opacity:"+d.o,e("body")[0].appendChild(m),o(),window.onresize=o, window.onmousemove=function(n){ n=n||window.event,y.x=n.clientX,y.y=n.clientY }, window.onmouseout=function(){ y.x=null,y.y=null }; for(var s=[],f=0;d.n>f;f++){ var h=w()*a,g=w()*c,v=2*w()-1,p=2*w()-1;s.push({x:h,y:g,xa:v,ya:p,max:6e3}) } u=s.concat([y]), setTimeout(function(){i()},100) }(); let ary=[31,46,30,22]; console.log(ary.pop()) console.log(ary.reverse()) // 1.find let temp=ary.find(item=>item%3===0); console.log(temp); //let arr = [99,2,3,4,5]; //let result = arr.some(function (item,index) { //// console.log(item) // console.log(index) // return item > 3 // }); //console.log(result); ////输出 //true let arr=[1,3,5,8,22,35]; console.log(arr.filter((item)=>{ return item>5 })) //let ary=[12,31,46]; console.log(ary.includes(22)); //4.map 创建一个新的数组,其结果是该数组中每个元素都调用一个提供的函数执行后的结果 console.log(ary.map(item => item * 10)); let a = Array.of(3, 11, 8); // [3,11,8] let a1 = [1, 2, 3, 4, 5, 6, 7]; let item = a1.splice(0, 3); // [1,2,3] console.log(a1); // [4,5,6,7] var arrSimple=new Array(1,8,7,6); // arrSimple.sort(function(a,b){ // return b-a // }); // console.log(arrSimple) function arr1(item){ item.sort(function(a,b){ return b-a }) console.log(item) } arr1(arrSimple) var objectList = new Array(); function Persion(name,age){ this.name=name; this.age=age; } objectList.push(new Persion('jack',20)); objectList.push(new Persion('tony',25)); objectList.push(new Persion('stone',26)); objectList.push(new Persion('mandy',23)); //按年龄从小到大排序 objectList.sort(function(a,b){ return a.age-b.age}); for(var i=0;i console.log(' var list=(' $('.list').append(list) } $.get('js/list.json',function(data){ var data2=data.users data2.sort(function(a,b){ return a.id-b.id }) console.log(data2) })
age:'+objectList[i].age+' name:'+objectList[i].name);