c# - Javascript 错误：消息：应为 ')'

Question

我在下面收到一个 javascript 错误，但我似乎找不到问题所在：

*消息：预期 ')' 行：431 字符：220 代码：0

URI: http://mywebsite/CustomerLogin.aspx*

第 431 行是这个 javascript 行：

<script language='Javascript'>
    var varDateNow = new Date();
    var varTimeNow = varDateNow.getTime();
    var varAlertTime = document.getElementById('cphTopContent_AlertTime').value;
    if(varTimeNow - varAlertTime < 1500)
        {alert('2' values you entered were not valid:\n\nLog In -  This value requires at least 6 characters. \nPassword -  This value requires at least 4 characters. \n');}
</script>  

是什么导致了javascript错误？

Answer 1

您缺少未结报价。2尝试在警报中取出关闭报价。以下是幕后发生的事情：由于您在 2 之后关闭了引号，因此您实际上在 .之后的行尾打开\n了一组新引号。因此，编译器将该点之后的所有内容解释为字符串，因此它永远不会找到右括号。

Answer 2

<script language='Javascript'>
    var varDateNow = new Date();
    var varTimeNow = varDateNow.getTime();
    var varAlertTime = document.getElementById('cphTopContent_AlertTime').value;
    if(varTimeNow - varAlertTime < 1500)
        {alert('2 values you entered were not valid:\n\nLog In -  This value requires at least 6 characters. \nPassword -  This value requires at least 4 characters. \n');}
</script> 

Answer 3

{alert('2' values you entered were not valid:\n\nLog In -  This value requires at least 6 characters. \nPassword -  This value requires at least 4 characters. \n');}

应该

{ alert("2 values you entered were not valid:\n\nLog In -  This valid requires at least 6 characters.\nPassword -  This value requires at least 4 charactersn\n"); }

你搞砸了几个引号，所以应该结束 alert() 的括号实际上是一个字符串。

Answer 4

警报消息必须是字符串。因此，在“2”之后，它只是不明白你想对所有字符和东西做什么。

alert("blah blah '2' more blah and blah " + variableSomething + "finalBlah");