Javascript 未捕获的 ReferenceError：<function> 未在 HTMLInputElement.onclick 中定义
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/43209534/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Uncaught ReferenceError: <function> is not defined at HTMLInputElement.onclick
提问by mbvee
I am trying to call a simple javascript function from my html page. The javascript function will decrypt using the "lib.js" file and the same is alerted.
我正在尝试从我的 html 页面调用一个简单的 javascript 函数。javascript 函数将使用“lib.js”文件解密，并发出相同的警报。
Uncaught ReferenceError: decryptfun is not defined at HTMLInputElement.onclick (test.html:18)
未捕获的 ReferenceError：decryptfun 未在 HTMLInputElement.onclick (test.html:18) 中定义
The below is the only file I use (along with other dependent library files).
下面是我使用的唯一文件（以及其他依赖库文件）。
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="lib.js">
function decryptfun() {
var pass = "hjubjbjhdgyuwj";
var encrtoken = "abcdefghijklmn";
var p = lib.decrypt(encrtoken, atob(pass));
}
alert(p);
</script>
</head>
<body>
<h1>Decrypt Operation</h1>
<input type="button" onclick="decryptfun()" value="Click">
</body>
</html>
I tried other suggestions provided for the same type of issue at Stackoverflow but I was not successful. Can anybody help me out in locating the cause of the issue ?
我在 Stackoverflow 上尝试了针对同一类型问题提供的其他建议，但没有成功。有人可以帮我找出问题的原因吗？
回答by Shakti Phartiyal
Your error is because you have defined your function inside:
你的错误是因为你已经在里面定义了你的函数：
<script type="text/javascript" src="lib.js">
the correct way is to close that script tag first like so:
正确的方法是先关闭该脚本标签，如下所示：
<script type="text/javascript" src="lib.js"></script>
and then defining the script tag again to define the function like so:
然后再次定义脚本标签来定义函数，如下所示：
<script>
function(){
//body of function
};
</script>
<script type="text/javascript" src="lib.js"></script>
<script>
function decryptfun() {
var pass = "hjubjbjhdgyuwj";
var encrtoken = "abcdefghijklmn";
//var p = lib.decrypt(encrtoken, atob(pass)); //USE THIS IN YOUR CASE
var p = "test"; //just for example
alert(p);
}
</script>
<h1>Decrypt Operation</h1>
<input type="button" onclick="decryptfun()" value="Click">