javascript replace _ with space code example

Example 1: js replace space with underscore

var string = "my name";
string = string.replace(/ /g,"_"); //returns my_name

Example 2: js replace space

// replaces space with '_'
str = str.replace(/ /g, "_");
// or
str = str.split(' ').join('_');

Example 3: javascript replace all spaces

var str = 'a b c';
var replaced = str.split(' ').join('_');

Example 4: javascript string spaces replace with %20

string.replace()