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if/switch练习

if/switch练习

作者: isMyNickName | 来源:发表于2018-11-04 18:58 被阅读0次
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        <title>if练习1</title>
        <script type="text/javascript">
            /*
             *  从键盘输入小明的期末成绩:
             *  当成绩为100时,'奖励一辆BMW'
             *  当成绩为[80-99]时,'奖励一台iphone15s'
             *  当成绩为[60-80]时,'奖励一本参考书'
             *  其他时,什么奖励也没有
             */
            var score = prompt('请输入小明的期末成绩(0-100):');
                if(score == 100){
                    alert('BMW');
                }else if(score >= 80 && score <=99){
                    alert('iphone15s');
                }else if(score >= 60 && score < 80){
                    alert('参考书');
                }else{
                    alert('啥也没有');
                }
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            /*
            *   大家都知道,男大当婚,女大当嫁。那么女方家长要嫁女儿,当然要提出一定的条件:
            *   高:180cm以上; 富:1000万以上; 帅:500以上;
            *   如果这三个条件同时满足,则:'我一定要嫁给他'
            *   如果三个条件有为真的情况,则:'嫁吧,比上不足,比下有余。'
            *   如果三个条件都不满足,则:'不嫁!'
            */
            var H = 180, M = 10000000, F = 500;
                if(H >= 180 && M >= 10000000 && F >= 500){
                    alert('我一定要嫁给他');
                }else if(H >= 180 || M >= 10000000 || F >= 500){
                    alert('嫁吧,比上不足,比下有余');
                }else{
                    alert('不嫁');
                }
        </script>
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            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
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            <a href="#"><img src="images/1-6597-78.png">
            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
        </div>
        <div class="lc1">
            <a href="#"><img src="images/1-6597-78.png">
            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
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            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
        </div>
        <div class="lc1">
            <a href="#"><img src="images/1-6597-78.png">
            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
        </div>
        <div class="lc1">
            <a href="#"><img src="images/1-6597-78.png">
            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
        </div>
        <div class="lc1">
            <a href="#"><img src="images/1-6597-78.png">
            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
        </div>
        <div class="lc1">
            <a href="#"><img src="images/1-6597-78.png">
            <p>一级 &bull; 碧螺春70g</p>
            <p><span class="price-prev">¥45</span><span class="price-next">¥138.00</span></p></a>
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<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>switch练习1</title>
        <script type="text/javascript">
            /*
             * 对于成绩大于等于60分的,输出'合格'。低于60分的,输出'不合格'
             */
            var score = parseInt(prompt('请输入成绩'));
                switch (true) {
                    case score>=60:
                        alert('合格');
                        break;
                    default:
                        alert('不合格');
                        break;
                }
        </script>
    <body>
    </body>
</html>
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>switch练习2</title>
        <script type="text/javascript">
            /*
             * 从键盘接收整数参数,如果该数为1-7,打印对应的星期,否则打印非法参数。
             */
            var today = parseInt(prompt('请输入1-7:'));
                switch (today) {
                    case today = 1:
                        alert('星期一');
                        break;
                    case today = 2:
                        alert('星期二');
                        break;
                    case today = 3:
                        alert('星期三');
                        break;
                    case today = 4:
                        alert('星期四');
                        break;
                    case today = 5:
                        alert('星期五');
                        break;
                    case today = 6:
                        alert('星期六');
                        break;
                    case today = 7:
                        alert('星期日');
                        break;
                    default:
                        alert('非法参数')
                }
        </script>
    <body>
    </body>
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      本文标题:if/switch练习

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