Page 163 - DCAP512_WAP_AND_WML

Unit 11: Using WML Script

Self Assessment Notes

Fill in the blanks:
10. ………………………. is the name specified for the function.
11. You can use the optional ………………………. keyword to specify that a function is to be
externally accessible.
12. WMLScript supports the use of ………………………. that specify compilation unit level
information.
13. The standard String library supports functions by which array-like behavior can be
implemented using ……………………….

11.4 Using WMLScript Libraries

11.4.1 Script Libraries

Table 11.4

Library Description
Lang Constants, math functions, etc.
Float Floating point math functions
String String processing functions
URL URL processing
WML Browser Browser interface, links to WML Script
Dialogs Basic user interactions

Dialog Library

Table 11.5

alert() Displays a message, waits for a confirmation, and then returns an empty string
confirm() Displays a message, waits for an answer, and returns a Boolean value depending
on the selected answer
prompt() Displays a question, waits for an input, and then returns the user’s answer

Float Library
Table 11.6

sqrt() Returns the square root of a specified number
floor() Returns the nearest integer that is not larger than a specified number
int() Returns the integer part of a specified number
ceil() Returns the nearest integer that is not smaller than a specified number
maxFloat() Returns the largest possible floating point number
minFloat() Returns the smallest possible floating point number
pow() Raises a number to the power of a second number and returns the result
Round() Returns the nearest integer to a specified number

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