conditional.js

来自「这是《JavaScript学习源代码》一书的源代码」· JavaScript 代码 · 共 32 行

//part 1...

// Is the browser Internet Explorer ?
var is_ie = browser_id();

// Display appropriate greeting
( is_ie ) ? greet_ie() : greet_other();

function browser_id()
{
  return (navigator.appName.indexOf("Microsoft") != -1) 
}

function greet_ie()
{
  alert("Welcome Internet Explorer User");
}

function greet_other()
{
  alert("Welcome To Our Website");
}

//part 2...

var a = 4, b = 7;

var a1 = ( a % 2 == 0) ? "EVEN" : "ODD" ;
var b1 = ( b % 2 == 0) ? "EVEN" : "ODD" ;

alert(a + " is " + a1 + "\n\n"+ b + " is " + b1);