17.5. Replacing a
Substring with Another Substring: replace() Function
The
replace() function finds all
occurrences of a certain substring and replaces them with another
one. The function's syntax is:
String.replace(original_string,
old_substring, new_substring);
The
replace() function
replaces all old_substring in original_string
with new_substring. The result is returned if everything works
fine. If old_substring
is an empty string or an error occurs, replace()
returns invalid.
Note
that the operation is case-sensitive and original_string
will not be modified by the function.
Below
are some WMLScript examples that demonstrate how to use the replace()
function:
var
str1 = "WMLScript Tutorial"; var str2 =
String.replace(str1, "WMLScript", "WML");
After
the execution of the above script, str1
contains the string "WMLScript Tutorial" and str2
contains the string "WML Tutorial".
var
str = String.replace("WMLScript Tutorial", "wmlscript",
"WML");
After
the execution of the above script, str contains the string
"WMLScript Tutorial".
var
str = String.replace("WMLScript Tutorial", "",
"WML");
After
the execution of the above script, str
contains the invalid
value.
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