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JavaScript-specific method to count the number of 1's in binary split method_javascript skills

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Release： 2016-05-16 18:28:02
Original
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The code is as follows:

Copy code The code is as follows:

function g(n){
var n = n.toString(2);
var count = 0;
for(var i=0;i{
if(n[i] = = "1")
count ;
}
return count;
}

I thought it was very troublesome to write like this, but I suddenly thought if I could use the split method of js. Realize the calculation of the number of 1, and the parameter of split is regular
[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute ]

Discover the original There are two errors in the code.


First, under IE, strings cannot use array subscripts to access the value at a specified position, and can only use the charAt(index) method.

The second is under Chrome and Opera, split(


[Ctrl A select all Note:
If you need to introduce external Js, you need to refresh to execute ]
Related labels：
javascript binary
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