var suffix = ' name';
var person = {
['first' + suffix]: 'Nicholas',
['last' + suffix]: 'Zakas'
}
person['first name']; // "Nicholas"
person['last name']; // "Zakas"
对象可计算属性名(仅在ES6中)
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转载自blog.csdn.net/sanlingwu/article/details/79336775
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