javascript - How to remove character from string by position number? -

i have string this:

var str = "this **test"; 

now want remove 2 stars (positions 10 , 11). , want this:

var newstar = "this test"; 

again, want remove them using number of position. how can that?

you may use string.replace also.

> var str = "this **test"; > str.replace(/^(.{10})../, '$1') 'this test' 

^(.{10}) captures first 10 characters , following .. matches 11th , 12th character. replacing matched characters captured chars give expected output.

if want satisfy position condition plus character codition regex must be,

str.replace(/^(.{10})\*\*/, '$1') 

this replace 2 stars if placed @ pos 11 , 12.

you may use variable inside regex using regexp constructor.

var str = "this ***test";  var pos = 10  var num = 3  alert(str.replace(new regexp("^(.{" + pos + "}).{" + num + "}"), '$1'))