Replacing the last character in a string javascript -


how replace last character of string? 

setcookie('pre_checkbox', "111111111111 11   ")     checkbox_data1 = getcookie('pre_checkbox');      if(checkbox_data1[checkbox_data1.length-1]==" "){          checkbox_data1[checkbox_data1.length-1]= '1';          console.log(checkbox_data1+"after");      }  out put on console : 111111111111 11   after

last character not replaced '1' dont know why

also tried : checkbox_data1=checkbox_data1.replace(checkbox_data1.charat(checkbox_data1.length-1), "1");

could 1 pls me out

simple regex replace should want:

checkbox_data1 = checkbox_data1.replace(/.$/,1);

generic version:

mystr = mystr.replace(/.$/,"replacement");

remember calling str.replace() doesn't apply change str unless str = str.replace() - is, apply replace() function's return value variable str


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