问题
can i use dash on the end of javascript object property name like this. I could not find in any documentation that this is not valid but i got some strange results when trying to access value myProp- in this case.
var myObject = {"myProp-":"myValue"};
i can only access to this value like this myObject["myProp-"] and i would like to access like
myObject.myProp-
but i got " SyntaxError: Unexpected token } "
回答1:
You'll have to use bracket notation instead of dot notation:
myObject["myProp-"]
回答2:
var myObject = {"myProp-":"myValue", "foo": "bar" };
myObject.foo;
myObject["foo"]; // these are equivalent
myObject.myProp-; // syntax error
myObject["myProp-"]; // this is fine
var key = "myProp-";
myObject[key]; // this works as well (dynamic index)
myObject.key; // undefined
Bracket notation are dot notation are equivalent.
来源：https://stackoverflow.com/questions/15815219/dash-on-the-end-of-javascript-object-property