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  • 作品第二课----求数组中所有数字的和

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Document</title>
        <style type="text/css">
        div { display: inline-block; margin-left: 37%; }
        button { margin-top: 10px; }
        span { color: #999; font: 12px/3.5 Tahoma; }
        </style>
        <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.js"></script>
    </head>
    <body>
        <div>
            <input type="text" value="1,2,3,4,5,6,7,8,9,10,11,12,13,14,15">
            <span>数字之间用半角逗号 “,” 隔开</span><br/>
            <button>求和</button>
            <p></p>    
        </div>
        <script>
        $("input").keyup(function(e){
            this.value = this.value.replace(/[^(d)|(,)]/,"");
            
        });
        $("button").on("click", function(){
            var sum = 0;
            var op = $("input").val().split(",");
            
            for (var i = 0; i < op.length; i++) {
                sum = sum + parseInt(op[i]);
            }
            $("p").text(sum);
        })
    
    
        </script>
        
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/samtrybest/p/5071473.html
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