a1exlism
1/11/2018 - 7:47 AM
reg_add_middle_start
var reg = /(^.{10})(?:.{4})(.*)/;
var str = 'abcdefgABCDEFGabcdefgABCDEFGabcd';
var newStr = str.replace(reg, '$1****$2');
console.log(newStr);
'abcdefgABC****abcdefgABCDEFGabcd'var reg = /(^.{10})(?:.{4})(.*)/;
var str = 'abcdefgABCDEFGabcdefgABCDEFGabcd';
var newStr = str.replace(reg, '$1****$2');
console.log(newStr);
'abcdefgABC****abcdefgABCDEFGabcd'