FreeCodeCamp学习--Slasher Flick
2017-04-08 19:02
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返回一个数组被截断
function slasher(arr, howMany) {
// it doesn't always pay to be first
var l=arr.length;
var arr1=[];
if(l<howMany)
{ return [];}
else if(howMany===0)
{ return arr;}
else{
for(var i=0;i<howMany;i++)
arr.splice(0,1);
}
return arr;
}
slasher([1, 2, 3], 2);
n个元素后还剩余的元素,截断从索引0开始。
function slasher(arr, howMany) {
// it doesn't always pay to be first
var l=arr.length;
var arr1=[];
if(l<howMany)
{ return [];}
else if(howMany===0)
{ return arr;}
else{
for(var i=0;i<howMany;i++)
arr.splice(0,1);
}
return arr;
}
slasher([1, 2, 3], 2);
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