JavaScript
String method trim()
Strips leading and trailing whitespace from the string, and returns it.
Synopsis
var s = str.trim();
Returns
A new string, with the whitespace characters at the beginning and end of
the string omitted.
Description
The trim
method works exactly like the trim
method of the java.lang.String
class in Java. For more information, see http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#trim().
Sample
var s0 = "";
var s1 = "Hello World!";
var s2 = "\n\n\n\rHello World!";
var s3 = "Hello World!\n\r\n";
var s4 = " Hello World! ";
var s5 = "\r \r \rHello World! \r \t\n";
var s6 = "\b\t\v\n\r ";
var s7 = "\tHello \t World!\t".trim();
s0 = s0.trim();
s1 = s1.trim();
s2 = s2.trim();
s3 = s3.trim();
s4 = s4.trim();
s5 = s5.trim();
s6 = s6.trim();
var str = String.format("s0=%S\ns1=%S\ns2=%S\ns3=%S\ns4=%S\ns5=%S\ns6=%S\ns7=%S\n",s0,s1,s2,s3,s4,s5,s6,s7);
document.getElementById("textarea").value = str;
Click the button below to run the test.
Alex Eng,