本地存储编辑不起作用

localStorage.setItem('gameState', '{"
grid ":{"
size ":4,"
cells ":[[{"
position ":{"
x ":0,"
y ":0},"
value ":1024},{"
position ":{"
x ":0,"
y ":1},"
value ":1024},{"
position ":{"
x ":0,"
y ":2},"
value ":1024},{"
position ":{"
x ":0,"
y ":3},"
value ":1024}],[{"
position ":{"
x ":1,"
y ":0},"
value ":1024},{"
position ":{"
x ":1,"
y ":1},"
value ":1024},{"
position ":{"
x ":1,"
y ":2},"
value ":1024},{"
position ":{"
x ":1,"
y ":3},"
value ":1024}],[{"
position ":{"
x ":2,"
y ":0},"
value ":1024},{"
position ":{"
x ":2,"
y ":1},"
value ":1024},{"
position ":{"
x ":2,"
y ":2},"
value ":1024},{"
position ":{"
x ":2,"
y ":3},"
value ":1024}],[{"
position ":{"
x ":3,"
y ":0},"
value ":1024},{"
position ":{"
x ":3,"
y ":1},"
value ":1024},{"
position ":{"
x ":3,"
y ":2},"
value ":1024},{"
position ":{"
x ":3,"
y ":3},"
value ":1024}]]},"
score ":272,"
over ":false,"
won ":false,"
keepPlaying ":false}');

我的脚本只是一个简单的脚本，旨在实现到 chrome 的浏览器栏中，但它返回SyntaxError: Unexpected token ILLEGAL .我尝试将本地存储设置为简单的东西，它可以工作。有人可以告诉我出了什么问题或重写它以使其工作。