JavaScript Pocket Reference

String

JavaScript Pocket Reference

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focus()

Grabs the keyboard focus and returns nothing.

remove(n)

Removes the nth element from the options[] array. Returns

nothing. DOM Level 1.

Event Handlers

onblur

Invoked when input focus is lost.

onchange

Invoked when the user selects or deselects an item.

onfocus

Invoked when input focus is gained.

See Also

Form, Input, Option

String

string manipulation

Core JavaScript 1.0; JScript 1.0; ECMA v1

Inherits From: Object

Constructor

String(s)

new String(s)

Without the new operator, the String() function converts its argu-

ment to a string. With the

new operator, it is a constructor that

wraps the converted value in a String object.

Properties

length

The number of characters in the string. Read-only.

Methods

charAt(n)

Returns the character at position n in the string.

String

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JavaScript Pocket Reference

charCodeAt(n)

Returns the Unicode encoding of the character at position n in

the string. JS 1.2; JScript 5.5; ECMA v1.

concat(value, ...)

Returns a new string that results from converting each of the

arguments to a string and concatenating the resulting strings.

JS 1.2; JScript 3.0; ECMA v3.

indexOf(substring, start)

Returns the position of the first occurrence of substring

within this string that appears at or after the start position or

-1 if no such occurrence is found. If

start ...