CSIS 138 JavaScript Class2

JavaScript – Class 2 ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],See page 6 in handout

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],no semicolon == means: is the same or is equal or is true the condition to be evaluated is inside the parenthesis code to be executed if the condition is true see page 7 handout

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],See page 8 and 9 in handout

[object Object],see page 10 handout Gives you the ability to execute code when the condition evaluates to true and also when it evaluates to false if (condition) { code here will execute if condition is true’ } else { code here will execute if condition is false; }

[object Object],see page 10 handout <script language=“JavaScript”> var variable1 = 123; var variable2 = 124; if (variable1 == variable2) { alert ("true"); } else { alert("false"); } </script>

[object Object],see page 11 handout var variable1 = 123; var variable2 = 124; if (variable1 == variable2) { alert("equal"); } else if (variable1 < variable2) { alert("less than"); } else { alert("none of the above"); } “ else if “block can be repeated as needed

[object Object],[object Object]

CSIS 138 JavaScript Class2

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