Replacing spaces with underscores in JavaScript?
I'm trying to use this code to replace spaces with _, it works for the first space in the string but all the other instances of spaces remain unchanged. Anybody know why?
function updateKey()
{
var key=$("#title").val();
key=key.replace(" ","_");
$("#url_key").val(key);
}
Try .replace(/ /g,"_");
Edit: or .split(' ').join('_') if you have an aversion to REs
Edit: John Resig said:
If you're searching and replacing through a string with a static search and a static replace it's faster to perform the action with .split("match").join("replace") - which seems counter-intuitive but it manages to work that way in most modern browsers. (There are changes going in place to grossly improve the performance of .replace(/match/g, "replace") in the next version of Firefox - so the previous statement won't be the case for long.)
try this:
key=key.replace(/ /g,"_");
that'll do a global find/replace
javascript replace
To answer Prasanna's question below:
How do you replace multiple spaces by single space in Javascript ?
You would use the same function replace with a different regular expression. The expression for whitespace is s and the expression for "1 or more times" is + the plus sign, so you'd just replace Adam's answer with the following:
key=key.replace(/s+/g,"_");
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