let str = "{'name':'wanglei'}"; let obj = JSON.parse(str);
以上会报错:
VM143:1 Uncaught SyntaxError: Unexpected token ' in JSON at position 1 at JSON.parse (<anonymous>) at <anonymous>:1:6 str = '{"name":"wanglei"}';
这样就好了!
key、value一定要用双引号,遵守json规范