js用switch输出成绩是否合格

墨蓝 2022-10-29 06:27 318阅读 0赞

代码：

<!DOCTYPE html>
    <html lang="zh">
    <head>
    	<meta charset="UTF-8" />
    	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
    	<meta http-equiv="X-UA-Compatible" content="ie=edge" />
    	<title>switch成绩大于60合格，小于60不合格</title>
    	<script type="text/javascript">
    		var grade = +prompt("请输入成绩：");
    		switch(true){
    			case grade>=60 && grade <=100:
    				console.log("合格");
    				break;
    			case (grade >= 0 && grade <60):
    				console.log("不合格");
    				break;
    			default:
    				console.log("不在成绩范围内。。");
    				break;
    		}	
    	</script>
    </head>
    <body>
    	
    </body>
    </html>

运行结果：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][20210209095018100.png]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70]: /images/20221024/5d2ef574224d48369df3bbd119362a47.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 1]: /images/20221024/750f12955a35461bae075cd18b532034.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 2]: /images/20221024/c8e2e8576c644a27bafdf06ab224322d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 3]: /images/20221024/4906a1827cde47d49df1c4abc01fb524.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZpZ2h0aW5nX2RyZWFt_size_16_color_FFFFFF_t_70 4]: /images/20221024/0d4aa13d87cc470cbdc219e4113a0dcc.png
[20210209095018100.png]: /images/20221024/d667d06db132455fad1831279a6a5eff.png