Gruntjs 尝试运行Grunt，但出现错误，不确定如何修复错误

我正在读史蒂文·富特写的一本关于学习编程的书。这本书目前正在讨论自动化，并详细介绍了如何使用grunt

我刚刚使用

npm安装-g grunt cli成功地安装了grunt，但是我现在遇到了一个我不熟悉的错误

运行grunt时，会出现以下错误：

users-mbp:kittenbook user$ grunt
Running "jshint:files" (jshint) task
Linting js/prompt.js ...ERROR
[L3:C21] E031: Bad assignment.
'<p>' + projectName = ' ' _ versionNumber +
Linting js/prompt.js ...ERROR
[L3:C22] W033: Missing semicolon.
'<p>' + projectName = ' ' _ versionNumber +
Linting js/prompt.js ...ERROR
[L3:C23] W030: Expected an assignment or function call and instead saw an expression.
'<p>' + projectName = ' ' _ versionNumber +
Linting js/prompt.js ...ERROR
[L3:C26] W033: Missing semicolon.
'<p>' + projectName = ' ' _ versionNumber +
Linting js/prompt.js ...ERROR
[L3:C27] W030: Expected an assignment or function call and instead saw an expression.
'<p>' + projectName = ' ' _ versionNumber +
Linting js/prompt.js ...ERROR
[L3:C28] W033: Missing semicolon.
'<p>' + projectName = ' ' _ versionNumber +
Linting js/prompt.js ...ERROR
[L4:C31] E031: Bad assignment.
'accessed on: ' + currentTime = '</p>';
Linting js/prompt.js ...ERROR
[L4:C31] W030: Expected an assignment or function call and instead saw an expression.
'accessed on: ' + currentTime = '</p>';
Linting js/prompt.js ...ERROR
[L4:C32] W033: Missing semicolon.
'accessed on: ' + currentTime = '</p>';
Linting js/prompt.js ...ERROR
[L4:C33] W030: Expected an assignment or function call and instead saw an expression.
'accessed on: ' + currentTime = '</p>';

Warning: Task "jshint:files" failed. Use --force to continue.

我是grunt的新手，所以我不确定该怎么做来修复错误。任何帮助都将不胜感激。
您只是在
提示符.js
中有一些错误的赋值。在一些地方，您使用
=
而不是
+
来连接字符串

替换为以下内容：

var userName=prompt（'你好，你叫什么名字？'）；
document.body.innerHTML='Hello'，+userName+'！'+
“”+projectName+”+versionNumber+
'访问日期：'+currentTime+'
'；