Javascript警告框未显示

Question

Ok so I still pretty new to programming but I can not wrap my head around why this code on jsbin doesn't work. I would think an alert box should pop up with with first value of the array which is the string "red" but nothing happens. I don't understand what the warnings are telling me either. I am sure its something simple but I just can't get it.

Live demo: http://jsfiddle.net/XZbnr/

Code:

var colors = [“red”, “blue”, “green”]; 
alert(colors[0]);

Answer 1

Looks like you have some special characters in there:

var colors = [“red”, “blue”, “green”]; 

Those quotes appear to be pasted from Microsoft Word, or similar.

Replace them with " and it will work:

var colors = ["red", "blue", "green"]; 
alert(colors[0]);

http://jsfiddle.net/XZbnr/1/

Answer 2

用普通引号替换“：”或“

Answer 3

Looks like you're using the wrong kind of quotation marks. Try just using " or '