循环赋值
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| var arr1 = new Array(100);
for(var i=0;i<arr1.length;i++){
arr1[i] = i;
}
console.log(arr1);
|
push方法实现
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| var arr2 = new Array();
for(var i=0;i<100;i++){
arr2.push(i);
}
console.log(arr2);
|
while
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| var arr3 = new Array();
var i = 0;
while(i<100){
arr3.push(i);
i++;
}
console.log(arr3);
|
do while
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| var arr4 = new Array();
var i = 0;
do{
arr4.push(i);
i++;
}
while(i<100)
console.log(arr4);
|
Object.keys
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| var arr5 = Object.keys(Array.apply(null, {length:100})).map(function(item){
return +item;
});
console.log(arr5);
|
Array.from
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| var arr6 = Array.from({length:100}, (v,k) => k);
console.log(arr6);
|
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| var arr7 = Array.from(Array(100), (v,k) =>k);
console.log(arr7);
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new Array(100).keys()
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| var arr8 = new Array(100).keys();
console.log(Array.from(arr8));
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递归
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| var arr = [];
var i = 0;
function MakeArray(num){
if(i<num){
arr[i] = i++;
MakeArray(num);
}
return arr;
}
console.log(MakeArray(100));
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new Array(100).toString()
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| var arr11 = new Array(100).toString().split(‘,‘).map(function(item,index){
return index;
});
console.log(arr11);
|
参考链接
https://www.cnblogs.com/fuzitu/p/10723869.html
