我要使用javascript中的字母数字验证 提前谢谢您
i want alphanumeric validation in javascript thank you in advance
推荐答案检查下面的链接 www.coderanch/t/119775/HTML-JavaScript/alphanumeric-validation [ ^ ] 或者您可以使用以下正则表达式 check the link below www.coderanch/t/119775/HTML-JavaScript/alphanumeric-validation[^] or you can use following regex var re = /^[\w ]+
/; 如果输入与我们的正则表达式不匹配，则// 验证将失败 如果(！re.test(form.inputfield.值)){ alert(" 错误:无效字符！" )； } /; // validation fails if the input doesn't match our regular expression if(!re.test(form.inputfield.value)) { alert("Error: invalid characters!"); }