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2010-05-26T08:25:01Z

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в 18:52, 25 мая 2010

2010-05-25T18:52:56Z

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== Conditionals==

<p>The format of a simple if statement looks like the following:</p>



<source lang="javascript">
if (expression)
statement;</source>

== if...else==

<p>Syntax</p>



<source lang="javascript">
if(statement){
code;
}else(statement){
code;
}</source>

== if...then...else...if==



<source lang="javascript">
<html>
<head>
<title>if...then...else...if</title>
<script type="text/javascript">
var stateCode = "MO";
if (stateCode == "OR") {
taxPercentage = 3.5;
} else if (stateCode == "CA") {
taxPercentage = 5.0;
} else if (stateCode == "MO") {
taxPercentage = 1.0;
} else {
taxPercentage = 2.0;
}
document.write(taxPercentage);
</script>
</head>
<body>
</body>
</html></source>

== Nested if statement==



<source lang="javascript">
<html>
<head>
<title>Nested if statement</title>
<script>
var temp = 0;
temp = Math.floor(Math.random() * 100) + 1;
alert ("It"s " + temp + " degrees outside. ");
if (temp < 70){
if (temp < 30){
alert("< 30");
} else {
alert(" between 30 and 70");
}
} else {
if (temp > 85){
alert("> 85");
} else {
alert("between 85 and 70");
}
}
</script>
</head>
<body>
<h3>Hit Reload to see another temperature</h3>
</body>
</html></source>

== Use if/else to check the returning value from a confirm dialog==



<source lang="javascript">
<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">

</script>
</head>
<body>
</body>
</html></source>

== Use if statement to check the returning value from a confirm dialog==



<source lang="javascript">
<html>
<head>
<title>A Simple Page</title>
<script language="JavaScript">

</script>
</head>
<body>
</body>
</html></source>

== Use if statement to compare the numbers==



<source lang="javascript">
<html>
<head>
<title>Use if statement to compare the numbers</title>
<script>
var temp = 0;
var perfectTemp = 65;

temp = Math.floor(Math.random() * 100) + 1;
alert ("It"s " + temp + " degrees outside. ");
if (temp < perfectTemp){
alert("Low!!");
}
</script>
</head>
<body>
<h3>Hit Reload to see another temperature</h3>
</body>
</html></source>

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Admin: 1 версия

в 18:52, 25 мая 2010