解决方法
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Question with no answers,but issue solved in the comments (or extended in chat))
OP写道：
@H_404_11@After some digging,I solved my question by
$("#e20").select2({
tags:["red","green","blue"],tokenSeparators: [","," "]
});
@H_404_11@
The key point is the tokenSeparators attribute.
And the 07001 is useful.
