Remove special symbols and extra spaces and replace with underscore using the replace method
Your regular expression [^a-zA-Z0-9]\s/g says match any character that is not a number or letter followed by a space.
Remove the \s and you should get what you are after if you want a _ for every special character.
var newString = str.replace(/[^A-Z0-9]/ig, "_");
That will result in hello_world___hello_universe
If you want it to be single underscores use a + to match multiple
var newString = str.replace(/[^A-Z0-9]+/ig, "_");
That will result in hello_world_hello_universe
Remove the \s from your new regex and it should work - whitespace is already included in "anything but alphanumerics".
Note that you may want to add a + after the ] so you don't get sequences of more than one underscore. You can also chain onto .replace(/^_+|_+$/g,'') to trim off underscores at the start or end of the string.
It was not asked precisely to remove accent (only special characters), but I needed to.
The solutions givens here works but they don’t remove accent: é, è, etc.
So, before doing epascarello’s solution, you can also do:
var newString = "développeur & intégrateur";
newString = replaceAccents(newString);
newString = newString.replace(/[^A-Z0-9]+/ig, "_");
alert(newString);
/**
* Replaces all accented chars with regular ones
*/
function replaceAccents(str) {
// Verifies if the String has accents and replace them
if (str.search(/[\xC0-\xFF]/g) > -1) {
str = str
.replace(/[\xC0-\xC5]/g, "A")
.replace(/[\xC6]/g, "AE")
.replace(/[\xC7]/g, "C")
.replace(/[\xC8-\xCB]/g, "E")
.replace(/[\xCC-\xCF]/g, "I")
.replace(/[\xD0]/g, "D")
.replace(/[\xD1]/g, "N")
.replace(/[\xD2-\xD6\xD8]/g, "O")
.replace(/[\xD9-\xDC]/g, "U")
.replace(/[\xDD]/g, "Y")
.replace(/[\xDE]/g, "P")
.replace(/[\xE0-\xE5]/g, "a")
.replace(/[\xE6]/g, "ae")
.replace(/[\xE7]/g, "c")
.replace(/[\xE8-\xEB]/g, "e")
.replace(/[\xEC-\xEF]/g, "i")
.replace(/[\xF1]/g, "n")
.replace(/[\xF2-\xF6\xF8]/g, "o")
.replace(/[\xF9-\xFC]/g, "u")
.replace(/[\xFE]/g, "p")
.replace(/[\xFD\xFF]/g, "y");
}
return str;
}Source: https://gist.github.com/jonlabelle/5375315