I"d like to find out what the differences are
.
I"d like to find out what the differences are
.for example, I have a strange property name
var a = {
'b-1': 2
}
a['b-1'] // for example, I need to get
dynamically.var obj = {
a: '1',
b: '2'
}
function getValue(key) {
return obj[key] //
}
getValue('a')
getValue('b') 
the standard universal method is actually in the form of a [] . The format of . is only used for individual string attributes (methods) of names determined in advance
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