If else statements

Often when using if statements, you will want to test more than just one condition. The sample code below explains how to do this. You can also watch the video here which runs through using if, else if, and else statements.

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 <meta charset="utf-8"/>
 <title>JavaScript - If Else Statements</title>
 <script type="text/javascript">
 
 // You can have a single if statement (tests one condition)...
 // However, you can also have an IF statement that tests multiple conditions
 // Eg. You can have an if and an else statement (tests two conditions)
 // You can have an if statement, else if statements, and an else statement (tests several conditions)
 
 // if - is the first condition to test
 // else if - is used to test other conditions
 // else - will run a piece of code only if none of the other condition tests have evaluated to true
 
 var age = 16
 
 if(age>=18){
 document.write("You are old enough to vote.");
 }
 else if(age==17){
 document.write("You can vote after your next birthday.");
 }
 else{
 document.write("You cannot vote yet.");
 }
 
 // Make sure you don't confuse the = sign (used for assigning values to variables) for == (used for comparisons)
 
 </script>
 
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