ActionScript for Flash MX: The Definitive Guide, Second Edition

String.toLowerCase() Method

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815

Example R-4 is a reusable function to search for and replace all occurrences of a substring

within a string.

See Also

String.slice(), String.substr(); “Combining String Examination with Substring Extraction,”

and “The substr() function,” in Chapter 4

String.toLowerCase() Method

generate a lowercase version of a string

Flash 5

string.toLowerCase()

Returns

The lowercase equivalent of string as a new string. Characters without a lowercase equiva-

lent are left unchanged.

Description

The toLowerCase() method creates a new, lowercase version of string; it can be used for

formatting or for facilitating case-insensitive character comparisons.

Usage

Note that toLowerCase() does not modify string; it returns a completely new string.

Example

// Set msg to "this sentence has mixed caps!"

msg = "ThiS SenTencE Has MixED CaPs!".toLowerCase();

Example R-4. A search-and-replace function

function replace (origStr, searchStr, replaceStr) {

var tempStr = "";

var startIndex = 0;

if (searchStr = = "") {

return origStr;

}

if (origStr.indexOf(searchStr) != -1) {

while ((searchIndex = origStr.indexOf(searchStr, startIndex)) != -1) {

tempStr += origStr.substring(startIndex, searchIndex);

tempStr += replaceStr;

startIndex = searchIndex + searchStr.length; ...