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  • js正则表达式校验非负整数:^\d+$ 或 ^[19]\d*|0$

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title></title>
        <script type="text/javascript">
            function validation() {
                var val = document.getElementById("txtNumber").value;
                var regu = /^\d+$/;
                //var regu = /^[1-9]\d*|0$/;  亲测可用
                if (val != "") {
                    if (!regu.test(val)) {
                        document.getElementById("labResult").style.color = "red";
                        document.getElementById("labResult").innerHTML = "验证失败!";
                    } else {
                        document.getElementById("labResult").style.color = "green";
                        document.getElementById("labResult").innerHTML = "验证成功!";
                    }
                }
            }
        </script>
    </head>
    <body>
        <input id="txtNumber" name="txtNumber" type="text" />
        <input id="btnValidation" name="btnValidation" type="button" value="校验" onclick="validation()" />
        验证结果:<label id="labResult" ></label>
    </body>
    </html>
    

      

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  • 原文地址:https://www.cnblogs.com/lengzhan/p/6042730.html
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