Week 12

Task 4
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user_1373341
html
2 years ago
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<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Question 4</title>
    </head>
    <body onload="randomValue()">
        <h1>Whosville library book search</h1>
        <form action="http://library.whosville/bsearch" method="GET" onsubmit="return validation()">
            <table border="0">
                <tr>
                    <td>Author name:</td>
                    <td>
                        <input type="text" size="33" name="author">
                    </td>
                </tr>
                <tr>
                    <td>Publication year:</td>
                    <td>
                        <input type="text" size="33" name="year">
                    </td>
                </tr>
                <tr>
                    <td valign="top">Subject:</td>
                    <td>
                        <input type="checkbox" name="sub" value="mth"> Mathematics <br />
                        <input type="checkbox" name="sub" value="cs"> Computer Science <br />
                        <input type="checkbox" name="sub" value="bio"> Biology <br />
                        <input type="checkbox" name="sub" value="phy"> Physics <br />
                        <input type="checkbox" name="sub" value="chem"> Chemistry
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                    	<span id="robotCheck"></span>
                    	<input type="text" id="val" size="5">
                    	<span id="message"></span>
                    </td>
                </tr>
                <tr>
                    <td></td>
                    <td>
                        <input type="submit" value="Search">
                        <input type="reset" value="Clear">
                    </td>
                </tr>
            </table>

        </form>

        <script type="text/javascript">
        	var num1;
        	var num2;
        	var sum;

        	function randomValue() {
        		num1 = Math.floor(Math.random()*10);
        		num2 = Math.floor(Math.random()*10);
        		sum = num1 + num2;

        		console.log("num1: " + num1 + " num2: " + num2);

        		var robotCheck = document.getElementById("robotCheck");
        		robotCheck.innerHTML = "Prove that you are not a robot: " + num1 + " + " + num2 + " = ";
        	}

        	function validation() {
        		var val = parseInt(document.getElementById("val").value);
        		var message = document.getElementById("message");

        		if (val != sum) {
        			message.innerHTML = '<font color="red">Wrong!</font>';
        			return false;
        		}
        		return true;
        	}
        </script>
    </body>
</html>
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