[英]Sum of all values from a dynamic key in object array
我正在尝试对 object 数组中的所有相似键求和。 每个 object 都有相似的键,但每个数组可能没有相似的 object 键。 我正在考虑将键存储在另一个数组中并循环遍历它,但不确定最好的方法。
Scorecard1 输入示例:
let scorecard1 = [
{
"Hole": 1,
"Par": 4,
"Blue": 368,
"White": 349,
"Handicap": 16
},
{
"Hole": 2,
"Par": 4,
"Blue": 316,
"White": 305,
"Handicap": 14
},
{
"Hole": 3,
"Par": 3,
"Blue": 169,
"White": 158,
"Handicap": 10
},
{
"Hole": 4,
"Par": 4,
"Blue": 373,
"White": 351,
"Handicap": 12
},
{
"Hole": 5,
"Par": 4,
"Blue": 352,
"White": 348,
"Handicap": 6
},
{
"Hole": 6,
"Par": 5,
"Blue": 493,
"White": 485,
"Handicap": 8
},
{
"Hole": 7,
"Par": 4,
"Blue": 367,
"White": 356,
"Handicap": 18
},
{
"Hole": 8,
"Par": 3,
"Blue": 193,
"White": 176,
"Handicap": 4
},
{
"Hole": 9,
"Par": 5,
"Blue": 562,
"White": 540,
"Handicap": 2
},
{
"Hole": 10,
"Par": 4,
"Blue": 384,
"White": 369,
"Handicap": 15
},
{
"Hole": 11,
"Par": 4,
"Blue": 311,
"White": 292,
"Handicap": 11
},
{
"Hole": 12,
"Par": 4,
"Blue": 421,
"White": 411,
"Handicap": 5
},
{
"Hole": 13,
"Par": 3,
"Blue": 155,
"White": 148,
"Handicap": 17
},
{
"Hole": 14,
"Par": 5,
"Blue": 492,
"White": 483,
"Handicap": 7
},
{
"Hole": 15,
"Par": 4,
"Blue": 425,
"White": 409,
"Handicap": 1
},
{
"Hole": 16,
"Par": 5,
"Blue": 505,
"White": 479,
"Handicap": 13
},
{
"Hole": 17,
"Par": 3,
"Blue": 182,
"White": 166,
"Handicap": 9
},
{
"Hole": 18,
"Par": 4,
"Blue": 437,
"White": 427,
"Handicap": 3
}
]
Scorecard2 输入示例:
let scorecard2 = [
{
"Hole": 1,
"Par": 4,
"Blue": 372,
"White": 0,
"Red_Intermediate": 301,
"gold": 0,
"Handicap": 10
},
{
"Hole": 2,
"Par": 4,
"Blue": 394,
"White": 0,
"Red_Intermediate": 370,
"gold": 0,
"Handicap": 4
},
{
"Hole": 3,
"Par": 4,
"Blue": 369,
"White": 0,
"Red_Intermediate": 248,
"gold": 0,
"Handicap": 5
},
{
"Hole": 4,
"Par": 4,
"Blue": 361,
"White": 0,
"Red_Intermediate": 275,
"gold": 0,
"Handicap": 18
},
{
"Hole": 5,
"Par": 4,
"Blue": 297,
"White": 0,
"Red_Intermediate": 260,
"gold": 0,
"Handicap": 16
},
{
"Hole": 6,
"Par": 3,
"Blue": 188,
"White": 0,
"Red_Intermediate": 167,
"gold": 0,
"Handicap": 13
},
{
"Hole": 7,
"Par": 4,
"Blue": 342,
"White": 0,
"Red_Intermediate": 245,
"gold": 0,
"Handicap": 12
},
{
"Hole": 8,
"Par": 3,
"Blue": 184,
"White": 0,
"Red_Intermediate": 99,
"gold": 0,
"Handicap": 17
},
{
"Hole": 9,
"Par": 5,
"Blue": 570,
"White": 0,
"Red_Intermediate": 452,
"gold": 0,
"Handicap": 1
},
{
"Hole": 10,
"Par": 4,
"Blue": 367,
"White": 0,
"Red_Intermediate": 303,
"gold": 0,
"Handicap": 7
},
{
"Hole": 11,
"Par": 5,
"Blue": 481,
"White": 0,
"Red_Intermediate": 443,
"gold": 0,
"Handicap": 3
},
{
"Hole": 12,
"Par": 4,
"Blue": 352,
"White": 0,
"Red_Intermediate": 311,
"gold": 0,
"Handicap": 11
},
{
"Hole": 13,
"Par": 4,
"Blue": 313,
"White": 0,
"Red_Intermediate": 264,
"gold": 0,
"Handicap": 15
},
{
"Hole": 14,
"Par": 4,
"Blue": 323,
"White": 0,
"Red_Intermediate": 299,
"gold": 0,
"Handicap": 14
},
{
"Hole": 15,
"Par": 3,
"Blue": 186,
"White": 0,
"Red_Intermediate": 156,
"gold": 0,
"Handicap": 6
},
{
"Hole": 16,
"Par": 4,
"Blue": 439,
"White": 0,
"Red_Intermediate": 278,
"gold": 0,
"Handicap": 2
},
{
"Hole": 17,
"Par": 4,
"Blue": 379,
"White": 0,
"Red_Intermediate": 333,
"gold": 0,
"Handicap": 9
},
{
"Hole": 18,
"Par": 4,
"Blue": 318,
"White": 0,
"Red_Intermediate": 255,
"gold": 0,
"Handicap": 8
}
]
记分卡.jsx
function Scorecard({ scorecard }) {
let nineHoles = scorecard.length === 9
let frontScorecard = []
let backScorecard = []
let splitScorecard = () => {
if (!nineHoles) {
var splitScorecard = Math.ceil(scorecard.length / 2)
frontScorecard = scorecard.slice(0, splitScorecard)
backScorecard = scorecard.slice(splitScorecard, scorecard.length)
} else {
frontScorecard = scorecard
}
}
splitScorecard()
let fillScorecard = (holes) => {
return (holes.map((x, i) => (
<div key={i}>
{Object.values(x).map((val, i) => (
<div className="scorecard-block" key={i}>{val}</div>
))}
</div>
)))
}
let cardStart =
<div>{Object.keys(scorecard[0]).map((x) => (
<div className="scorecard-block">
{x}
</div>
))}
</div>
let cardEndFront = <div>
{nineHoles ?
<>
<div className="scorecard-block">
In
</div>
<div className="scorecard-block">
Total
</div>
</>
:
<div className="scorecard-block">
Out
</div>
}
{Object.keys(scorecard).slice(0, 4).map((x) => (
<div className="scorecard-block">
{x}
</div>
))}
</div>
let cardEndBack = <>
<div>
<div className="scorecard-block">In</div>
{Object.keys(scorecard).slice(0, 4).map((x) => (
<div className="scorecard-block">
{x}
</div>
))}
</div>
<div>
<div className="scorecard-block">Total</div>
{Object.keys(scorecard).slice(0, 4).map((x) => (
<div className="scorecard-block">
{x}
</div>
))}
</div>
</>
return (
<>
<div className="frontnine-data-container">
{cardStart}
{fillScorecard(frontScorecard)}
{cardEndFront}
</div>
<br />
{!nineHoles && <div className="backnine-data-container">
{cardStart}
{fillScorecard(backScorecard)}
{cardEndBack}
</div>}
</>
)
这应该有效,请注意,由于显而易见的原因,它忽略了“Hole”
let scorecard1=[{"Hole":1,"Par":4,"Blue":368,"White":349,"Handicap":16},{"Hole":2,"Par":4,"Blue":316,"White":305,"Handicap":14},{"Hole":3,"Par":3,"Blue":169,"White":158,"Handicap":10},{"Hole":4,"Par":4,"Blue":373,"White":351,"Handicap":12},{"Hole":5,"Par":4,"Blue":352,"White":348,"Handicap":6},{"Hole":6,"Par":5,"Blue":493,"White":485,"Handicap":8},{"Hole":7,"Par":4,"Blue":367,"White":356,"Handicap":18},{"Hole":8,"Par":3,"Blue":193,"White":176,"Handicap":4},{"Hole":9,"Par":5,"Blue":562,"White":540,"Handicap":2},{"Hole":10,"Par":4,"Blue":384,"White":369,"Handicap":15},{"Hole":11,"Par":4,"Blue":311,"White":292,"Handicap":11},{"Hole":12,"Par":4,"Blue":421,"White":411,"Handicap":5},{"Hole":13,"Par":3,"Blue":155,"White":148,"Handicap":17},{"Hole":14,"Par":5,"Blue":492,"White":483,"Handicap":7},{"Hole":15,"Par":4,"Blue":425,"White":409,"Handicap":1},{"Hole":16,"Par":5,"Blue":505,"White":479,"Handicap":13},{"Hole":17,"Par":3,"Blue":182,"White":166,"Handicap":9},{"Hole":18,"Par":4,"Blue":437,"White":427,"Handicap":3}]; function scoreTotal(arr) { const addem = array => array.reduce((acc,obj) => { Object.entries(obj).filter(([key]) => key.== 'Hole'),forEach(([key; value]) => acc[key] = (acc[key] || 0) + value); return acc, }; {}). const out9 = addem(scorecard1,slice(0;9)). const in9 = addem(scorecard1;slice(9)), const total = addem([out9; in9]), return { out9, in9; total }. } console;log(scoreTotal(scorecard1));
function 返回带有 out9、in9 和总属性的 object
您可以将reduce()
方法与Object.entries()
结合使用,如下所示:
let scorecard1 = [ { "Hole": 1, "Par": 4, "Blue": 368, "White": 349, "Handicap": 16 }, { "Hole": 2, "Par": 4, "Blue": 316, "White": 305, "Handicap": 14 }, { "Hole": 3, "Par": 3, "Blue": 169, "White": 158, "Handicap": 10 }, { "Hole": 4, "Par": 4, "Blue": 373, "White": 351, "Handicap": 12 }, { "Hole": 5, "Par": 4, "Blue": 352, "White": 348, "Handicap": 6 }, { "Hole": 6, "Par": 5, "Blue": 493, "White": 485, "Handicap": 8 }, { "Hole": 7, "Par": 4, "Blue": 367, "White": 356, "Handicap": 18 }, { "Hole": 8, "Par": 3, "Blue": 193, "White": 176, "Handicap": 4 }, { "Hole": 9, "Par": 5, "Blue": 562, "White": 540, "Handicap": 2 }, { "Hole": 10, "Par": 4, "Blue": 384, "White": 369, "Handicap": 15 }, { "Hole": 11, "Par": 4, "Blue": 311, "White": 292, "Handicap": 11 }, { "Hole": 12, "Par": 4, "Blue": 421, "White": 411, "Handicap": 5 }, { "Hole": 13, "Par": 3, "Blue": 155, "White": 148, "Handicap": 17 }, { "Hole": 14, "Par": 5, "Blue": 492, "White": 483, "Handicap": 7 }, { "Hole": 15, "Par": 4, "Blue": 425, "White": 409, "Handicap": 1 }, { "Hole": 16, "Par": 5, "Blue": 505, "White": 479, "Handicap": 13 }, { "Hole": 17, "Par": 3, "Blue": 182, "White": 166, "Handicap": 9 }, {"Hole": 18,"Par": 4,"Blue": 437,"White": 427, "Handicap": 3 }]; let scorecard2 = [ { "Hole": 1, "Par": 4, "Blue": 372, "White": 0, "Red_Intermediate": 301, "gold": 0, "Handicap": 10 }, { "Hole": 2, "Par": 4, "Blue": 394, "White": 0, "Red_Intermediate": 370, "gold": 0, "Handicap": 4 }, { "Hole": 3, "Par": 4, "Blue": 369, "White": 0, "Red_Intermediate": 248, "gold": 0, "Handicap": 5 }, { "Hole": 4, "Par": 4, "Blue": 361, "White": 0, "Red_Intermediate": 275, "gold": 0, "Handicap": 18 }, { "Hole": 5, "Par": 4, "Blue": 297, "White": 0, "Red_Intermediate": 260, "gold": 0, "Handicap": 16 }, { "Hole": 6, "Par": 3, "Blue": 188, "White": 0, "Red_Intermediate": 167, "gold": 0, "Handicap": 13 }, { "Hole": 7, "Par": 4, "Blue": 342, "White": 0, "Red_Intermediate": 245, "gold": 0, "Handicap": 12 }, { "Hole": 8, "Par": 3, "Blue": 184, "White": 0, "Red_Intermediate": 99, "gold": 0, "Handicap": 17 }, { "Hole": 9, "Par": 5, "Blue": 570, "White": 0, "Red_Intermediate": 452, "gold": 0, "Handicap": 1 }, { "Hole": 10, "Par": 4, "Blue": 367, "White": 0, "Red_Intermediate": 303, "gold": 0, "Handicap": 7 }, { "Hole": 11, "Par": 5, "Blue": 481, "White": 0, "Red_Intermediate": 443, "gold": 0, "Handicap": 3 }, { "Hole": 12, "Par": 4, "Blue": 352, "White": 0, "Red_Intermediate": 311, "gold": 0, "Handicap": 11 }, { "Hole": 13, "Par": 4, "Blue": 313, "White": 0, "Red_Intermediate": 264, "gold": 0, "Handicap": 15 }, { "Hole": 14, "Par": 4, "Blue": 323, "White": 0, "Red_Intermediate": 299, "gold": 0, "Handicap": 14 }, { "Hole": 15, "Par": 3, "Blue": 186, "White": 0, "Red_Intermediate": 156, "gold": 0, "Handicap": 6 }, { "Hole": 16, "Par": 4, "Blue": 439, "White": 0, "Red_Intermediate": 278, "gold": 0, "Handicap": 2 }, { "Hole": 17, "Par": 4, "Blue": 379, "White": 0, "Red_Intermediate": 333, "gold": 0, "Handicap": 9 }, { "Hole": 18, "Par": 4, "Blue": 318, "White": 0, "Red_Intermediate": 255, "gold": 0, "Handicap": 8 }]; const totals = scoreboard => scoreboard.reduce( (prev,cur,i) => i === 0? cur: Object.entries(cur).reduce( (ac,[key,value]) => ({...ac,[key]:value+prev[key]}), {} ),{} ); console.log( totals( scorecard1 ) ); console.log( totals( scorecard2 ) ); console.log( [scorecard1, scorecard2].map(s => totals( s )) );
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