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Javascript strings

Jun 26, 2015

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Daniel G.

Javascript Strings
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Page 1: Javascript strings

String

Page 2: Javascript strings

charAt()

var str = "HELLO WORLD";var res = str.charAt(0);

// H

Page 3: Javascript strings

charCodeAt()

var str = "HELLO WORLD";var n = str.charCodeAt(0);

/72

Page 4: Javascript strings

concat()

var str1 = "Hello ";var str2 = "world!";var res = str1.concat(str2);

// Hello world

Page 5: Javascript strings

fromCharCode()

var res = String.fromCharCode(65);

// A

Page 6: Javascript strings

indexOf()

var str = "Hello world, welcome to the universe.";var n = str.indexOf("welcome");

// 13

Page 7: Javascript strings

lastIndexOf()

var str = "Hello planet earth, you are a great planet.";var n = str.lastIndexOf("planet");

// 36

Page 8: Javascript strings

match()

var str = "The rain in SPAIN stays mainly in the plain"; var res0 = str.match(/ain/g); //global

var res1 = str.match(/ain/gi); //global ignore case

// ain,ain,ain

// ain,AIN,ain,ain

Page 9: Javascript strings

replace

var str = "Visit Microsoft!";var res = str.replace("Microsoft", “Apple");

// Visit Apple

Page 10: Javascript strings

Search()

var str = "Visit Apple!";var n = str.search(“Apple");

// 6

Page 11: Javascript strings

slice()

var str = "Hello world!";var res = str.slice(1,5);

// ello

Page 12: Javascript strings

split()

var str = "How are you doing today?";var res = str.split(" ");

// How,are,you,doing,today? (array)

Page 13: Javascript strings

substr()

var str = "Hello world!";var res = str.substr(1, 4)

//ello

// desde el 1º 4 caracteres

Page 14: Javascript strings

substring()

var str = "Hello world!";var res = str.substring(1, 4);

// ell

// desde el 1º al 4º caracter sin incluirlo.

Page 15: Javascript strings

toLowerCase()

var str = "Hello World!";var res = str.toLowerCase();

// hello world

Page 16: Javascript strings

toUpperCase()

var str = "Hello World!";var res = str.toUpperCase();

// HELLO WORLD

Page 17: Javascript strings

trim()

var str = "       Hello World!        ";alert(str.trim());

//Hello World

Page 18: Javascript strings

valueOf

var str = “1234";var res = str.valueOf();

// 1234

Page 19: Javascript strings

anchor()

var txt = "Chapter 10";txt.anchor("chap10");

// <a name="chap10">Chapter 10</a>

Page 20: Javascript strings

big()

var str = "Hello World!";var result = str.big();

// Hello World!

Page 21: Javascript strings

Y más…var txt = "Hello World!";

document.write("The original string: " + txt);document.write("<p>Big: " + txt.big() + "</p>");document.write("<p>Small: " + txt.small() + "</p>");document.write("<p>Bold: " + txt.bold() + "</p>");document.write("<p>Italic: " + txt.italics() + "</p>");document.write("<p>Fixed: " + txt.fixed() + "</p>");document.write("<p>Strike: " + txt.strike() + "</p>");document.write("<p>Fontcolor: " + txt.fontcolor("green") + "</p>");document.write("<p>Fontsize: " + txt.fontsize(6) + "</p>");document.write("<p>Subscript: " + txt.sub() + "</p>");document.write("<p>Superscript: " + txt.sup() + "</p>");document.write("<p>Link: " + txt.link("http://www.itmaster.com.ar") + "</p>");