任何本机替代品:
const colorArray = ['red', 'green', 'green', 'blue', 'purple', 'red', 'red', 'black'];
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到:
Object {
"red": 3,
"green": 2,
"blue": 1,
"purple": 1,
"black": 1
}
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在javascript中??
const colorArray = ['red', 'green', 'green', 'blue', 'purple', 'red', 'red', 'black'];
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感谢您的宝贵努力和时间!!
javascript arrays duplicates categorization categorical-data