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JavaScript nested if and else

This statement allows us to select one statement among many statements.It is also called nested if….else.

Other examples in Ifelse (JavaScript Language)

Result from the Online TryIt-Editor

<!doctype html>
<html>
<head>
    <title>HtmlNest.com live html example</title>
    <script type="text/javascript">
        function Search1() {
            var s = document.getElementById("search");
            if (s.value.length == 0) {
                alert("Please enter something in textbox and then click");
            }
            else if (s.value.length < 3) {
                alert("String length must be greater than 3");
            }
            else {
                alert("You entered string of length\n" + s.value.length);
            }
        }
    </script>
</head>
<body>
    <h2>
        If statement test
    </h2>
    <p>
        <ol>
            <li>If you do not enter anything in box it will show a popup</li>
            <li>If you enter string of length less than 3 it will ask to enter string of length
                greater than 3.</li>
            <li>If you enter a string of length greater than 3 it will show a message with the length
                of string</li>
        </ol>
    </p>
    <input type="text" id="search" />
    <input type="button" value="Click" onclick="Search1()" />
</body>
</html>

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^1.0

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^3.0

^4.0

JavaScript nested if and else

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