Does javascript have a trim method?

There is trim method in javascript. trim() is a string processing method built into JavaScript, which is used to remove whitespace characters at the beginning and end of a string. The syntax is "string.trim()"; the whitespace characters that the trim method can delete include spaces and tabs. character, line feed character, carriage return character, etc.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

There is a trim method in javascript.

The trim() method is used to remove leading and trailing whitespace characters from a string. The syntax is as follows:

string.trim()

trim() method can remove the following whitespace characters:

• " ": ordinary space characters;

• "\t": tab character;

• "\n": line feed character;

• "\r": carriage return character;

• "\0": null byte character;

• "\x0B": vertical tab character.

The trim() method does not change the original string.

trim() method is not applicable to null, undefined, Number types.

JavaScript version:	ECMAScript 5

Return value: Returns removing leading and trailing spaces String

Example:

function f() {
  var str1 = ` 123
  `;
  console.log(str1);
  console.log(str1.trim());
  var str2 = `\n23\n4 `;
  console.log(str2);
  console.log(str2.trim());
}
f();

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