正则匹配中英文判断

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>中英文匹配判断</title>
</head>
<body>
    
    <form action="" onsubmit="dosubmit()">
        <input type="text" id="name">
        <input type="submit" value="匹配">
    </form>
<script>
    function dosubmit(){
        var name = document.getElementById(\'name\').value;
        if(/^[0-9A-Za-z\u4E00-\u9FFF]+$/.test(name)){
            alert(\'你输入的是中英文和数字\');
        }else{
            alert(\'你输入的不是中英文和数字\');
        }

        if(name.match(/^[0-9A-Za-z\u4E00-\u9FFF]+$/)!=null){
            //用正则替换字符串            
            alert(name.replace(/^(5201314)$/, \'我爱你一生一世\'));            
        }else{
            alert(\'你输入的不是中英文和数字\');    
        }
        return false;
    }
</script>
</body>
</html>