Archivo de la categoría: Programación

Strings

Concatenar strings $str1 = “hola “;$str2 = “que tal “;$str3= “como estas?”; $str4 = $str1.$str2.$str3; Strings CharsSe pueden reemplazar los caracteres:$str1 = «0123456789″;$str1[2]=»x«; Cambiar a mayusculas y minúsculas:strtoupper();strtolower(); Capitaliza la primera letra:ucfirst(); Capitaliza todas las letras:ucwords();ASCII chr(32) = spacechr(65) = A ord(“A”) = 65;   Tags: strings

unset()

unset() Syntax:    void unset(mixed var [, mixed var, …])var    Variable to unset. Unsets a variable. unset() destroys one or more variables and deallocates the memory associated with them. Code: <?php $a = «Some data»; unset($a); if (!isset($a)) {    print «\$a is no longer available»; } ?> Output: $a is no longer available

Introducción a PHP

¿ Que es PHP ? Scripting / Programming Language (“C – Like”) FREE and Open Source Fast, Open, Stable, Cross Platform! No compilation! PHP is all about “Community”    

Detecting the Browser and it Resources

Navigator Object Determine details of the user browser appName – browser application name appVersion – string containing version details cookieEnabled – boolean value mimeTypes – array of known types of files plugins – array of plug-in application platform – operating system http://www.devguru.com/technologies/javascript/11226.asp   Tags: detecting+browser, javascript

Creating and extending objects

Why develop objects? Data hiding Code elegance Code reuse Script stability Steps for developing custom objects Design properties and methods Create constructor functions Develop methods Bind methods to objects  

Anatomy of an object

information that describes the object functions that change the state of the object   Duality of the object variable -> functionproperty (information about the object)-> method (what the object can do)attribute->behaviourdescription->actionadjetive->verb Encapsulation Binding data and functions Provides robust and secure set of elements simple interface hide details class an object prototype Object instantaion with instructions… Leer más »

String Method

 document.write(«<h1>String Methods</h1>»);    var sample_string = «AaBbCcDdEeFfGg»;    document.write(«<br>Orignal String: » + sample_string);    document.write(«<h2>Formatting</h2>»);    document.write(«<br>toLowerCase: » + sample_string.toLowerCase()); document.write(«<br>toUpperCase: » + sample_string.toUpperCase()); document.write(«<br>bold: » + sample_string.bold()); document.write(«<br>italics: » + sample_string.italics()); document.write(«<br>strike: » + sample_string.strike()); document.write(«<br>big: » + sample_string.big()); document.write(«<br>small: » + sample_string.small()); document.write(«<br>sup: » + sample_string.sup()); document.write(«<br>sub: » + sample_string.sub()); document.write(«<br>fixed: » + sample_string.fixed()); document.write(«<br>fontcolor(red): » +… Leer más »

Simple Date

 tempDate = new Date(); document.write(«Fecha: » + tempDate.toLocaleString());  otraFecha = new Date(2007, 04, 11, 10, 52, 30);  document.write(«<br> Otra Fecha:» + otraFecha + «<br>»);  document.write(«Date: » + otraFecha.getDate() +»<br>»); document.write(«Month: » + otraFecha.getMonth() +»<br>»); document.write(«Year: » + otraFecha.getYear() +»<br>»); document.write(«Locale String: » + otraFecha.toLocaleString() +»<br»);  Tags: date, javascript

funciones functions javaScript

 /* FUNCTIONS */  function hola_usuario() {  document.write(«Hola que tal <br>»)  }  function raiz(x) {   return x * x ;  }   hola_usuario();     numero=prompt(«Ingresa un numero», 0); document.write(raiz(numero)); Tags: funciones, functions