SyntaxError：Chrome 的 Javascript 控制台中的意外标识符
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SyntaxError: Unexpected Identifier in Chrome's Javascript console
提问by mjmitche
I tested this javascript in Chrome's Javascript console and it returned SyntaxError: Unexpected Identifier.
我在 Chrome 的 Javascript 控制台中测试了这个 javascript，它返回SyntaxError: Unexpected Identifier.
I got this code from a tutorial and was just testing Chrome's console so i expected it to work, unless I'm using the console wrong?
我从教程中得到了这段代码，只是在测试 Chrome 的控制台，所以我希望它可以工作，除非我使用的控制台错误？
Code:
代码：
var visitorName = "Chuck";
var myOldString = "Hello username. I hope you enjoy your stay username.";
var myNewString = myOldString.replace ("username," visitorName);
document.write("Old String = " + myOldString);
document.write("<br/>New string = " + myNewString);
Output:
输出：
SyntaxError: Unexpected identifier
回答by David Tang
The comma got eaten by the quotes!
逗号被引号吃掉了！
This part:
这部分：
("username," visitorName);
Should be this:
应该是这样的：
("username", visitorName);
Aside: For pasting code into the console, you can paste them in one line at a time to help you pinpoint where things went wrong ;-)
旁白：要将代码粘贴到控制台中，您可以一次将它们粘贴在一行中，以帮助您查明问题出在哪里；-)
回答by Robin
Replace
代替
var myNewString = myOldString.replace ("username," visitorName);
with
和
var myNewString = myOldString.replace("username", visitorName);
回答by M. Habib
I got this error Unexpected identifierbecause of a missing semi-colon ;at the end of a line. Anyone wandering here for other than above-mentioned solutions, This might also be the cause of this error.
Unexpected identifier由于;行尾缺少分号，我收到此错误。除了上述解决方案之外，任何人都在这里徘徊，这也可能是导致此错误的原因。
回答by ashish.chotalia
Write it as below
写成下面这样
<script language="javascript">
var visitorName = 'Chuck';
var myOldString = 'Hello username. I hope you enjoy your stay username.';
var myNewString = myOldString.replace('username', visitorName);
var myNewString = myOldString.replace('username',visitorName);
document.write('Old String = ' + myOldString);
document.write('<br/>New string = ' + myNewString);
</script>
