似乎人们对我想要实现的目标感到困惑，所以我会更好地解释这一点。 我有一系列原创产品。单个产品如下所示：
{
"id": 1,
"gtin": "8714574627946|4549292038446",
"productId": "0592C022",
"make": "Canon",
"model": "750D + EF-S 18-55mm",
"expert": false,
"sponsored": false,
"attributes": {
"id": 1,
"compatibleMemory": "SD, SDHC, SDXC\"",
"whiteBalance": "ATW, Cloudy, Custom modes, Daylight, Flash, Fluorescent L, Shade, Tungsten\"",
"sceneModes": "Food, Landscape, Sports\"",
"shootingModes": "",
"photoEffects": "",
"cameraPlayback": "Movie, Single image, Slide show\"",
"tripod": false,
"directPrinting": false,
"colour": "Black",
"picture": {
"id": 1,
"megapixel": "24.2 MP",
"type": "SLR Camera Kit",
"sensorType": "CMOS",
"maxResolution": "6000 x 4000 pixels",
"resolutions": "3984x2656, 2976x1984, 1920x1280, 720x480, 5328x4000, 3552x2664, 2656x1992, 1696x1280, 640x480, 6000x3368, 3984x2240, 2976x1680, 1920x1080, 720x480, 4000x4000, 2656x2656, 1984x1984, 1280x1280, 480x480\"",
"stablizer": true,
"location": "Lens",
"supportedAspectRatios": "2.9 cm",
"totalMegapixels": "24.7 MP",
"formats": "JPG"
},
"video": {
"id": 1,
"maxResolution": "1920 x 1080 pixels",
"resolutions": "640 x 480, 1280 x 720, 1920 x 1080 pixels\"",
"captureResolution": "",
"frameRate": "",
"fullHD": true,
"supportedFormats": null
},
"audio": {
"id": 1,
"supportedFormats": ""
},
"battery": {
"id": 1,
"powerSource": "Battery",
"technology": "Lithium-Ion (Li-Ion)",
"life": "",
"type": "LP-E17"
},
"dimensions": {
"id": 1,
"width": "",
"depth": "7.78 cm",
"height": "10.1 cm",
"weight": "",
"weightIncludingBattery": "555 g"
},
"display": {
"id": 1,
"type": "LCD",
"diagonal": "7.62 cm (3\"\")\"",
"resolution": "1040000 pixels"
},
"exposure": {
"id": 1,
"isoSensitivity": "100, 6400, 12800, Auto\"",
"mode": "Auto, Manual\"",
"correction": "�5EV (1/2; 1/3 EV step)",
"metering": "Centre-weighted, Evaluative (Multi-pattern), Partial, Spot\"",
"minimum": 100,
"maxiumum": 12800
},
"flash": {
"id": 1,
"modes": "Hi-speed sync, Red-eye reduction\"",
"exposureLock": true,
"rangeWide": "",
"rangeTelephoto": "",
"rechargeTime": "",
"speed": "1/200"
},
"focusing": {
"id": 1,
"focus": "TTL-CT-SIR",
"adjustment": "",
"autoFocusModes": "",
"closestDistance": "0.25 m",
"normalRange": "",
"macroRangeTelephoto": "",
"macroRangeWide": "",
"autoModeTelephoto": "",
"autoModeWide": ""
},
"interface": {
"id": 1,
"pictBridge": true,
"usbVersion": "2.0",
"usbType": "",
"hdmi": true,
"hdmiType": "Mini"
},
"lens": {
"id": 1,
"focalLength": "18 - 55 mm",
"minimumFocalLength": "2.9 cm",
"maximumFocalLength": "8.8 cm",
"minimumAperture": "3.5",
"maximumAperture": "38",
"lensStructure": "13/11",
"zoom": {
"id": 1,
"optical": "",
"digital": "",
"extraSmart": "",
"combined": ""
}
},
"network": {
"id": 1,
"wiFi": false,
"wiFiStandards": "",
"nfc": false
},
"shutter": {
"id": 1,
"fastestSpeed": "1/4000 s",
"slowestSpeed": "30 s"
}
},
"details": {
"id": 1,
"title": "Canon EOS 750D + EF-S 18-55mm",
"description": "\"<b>Take your pictures to the next level with EOS 750D</b>\\n- Effortlessly take your pictures to the next level with the latest DSLR technology and Scene Intelligent Auto mode.\\n- Effortlessly capture stunning detail in any situation\\n- Record cinematic movies as easily as you shoot stills\\n- Easily connect and share your images with the world\\n\\n<b>Take your pictures to the next level with EOS 750D</b>\\n<b>Range of shooting modes</b>\\nEffortlessly capture stunning images using the latest DSLR technology with Basic and Creative modes, which allow you to take as much or as little control as you like.\\n\\n<b>Moveable screen for creative framing</b>\\nExplore creative shooting angles and enjoy simple and intuitive access to controls using the 3.0\"\" (7.7cm) Vari Angle LCD touch screen\\n\\n<b>Intelligent Viewfinder</b>\\nEOS 750D features an Intelligent Viewfinder which gives a much enhanced shooting experience. As you look through the viewfinder you can more easily see the focus point and any active AF areas, also the shooting information is clearly displayed.\\n\\n<b>Effortlessly capture stunning detail in any situation</b>\\nCapture vivid, detailed, high-resolution images with better dynamic range, lower noise and excellent control over depth of field thanks to a 24.2 Megapixel APS-C sensor.\\n\\n<b>19 all cross-type AF points for accurate subject tracking</b>\\nKeep track of fast moving action thanks to a fast and accurate autofocus system comprising 19 cross-type AF points.\\n\\n<b>Fast processor for action</b>\\nA powerful DIGIC 6 processor delivers full resolution shooting at 5 fps � so you�ll never miss that decisive moment.\\n\\n<b>Great low light shots</b>\\nTake memorable low light pictures without using flash thanks to a large ISO sensitivity range of ISO 100-12800 (extendable to ISO 25600)\\n\\n<b>Record cinematic Full HD movies as easily as you shoot stills</b>\\nShoot superbly detailed Full HD movies with a cinematic feel thanks to DSLR control over depth of field. Record your movies in MP4 format for quicker online sharing and easier transfer to other devices.\\n\\n<b>Smoother results</b>\\nEasily shoot cinematic Full HD movies with Hybrid CMOS AF III to track movement and focus smoothly between subjects.\\n\\n<b>Empower your creativity with easy shooting modes</b>\\nLet the camera do the work for you and capture creative photos with ease using a range of Scene Modes\\n\\n<b>Creative movie modes</b>\\nExpand the range of shooting possibilities in movies with features like Miniature Effect in movie.\"",
"shortDescription": "\"22.3 x 14.9mm CMOS, 24.2 megapixels, 3:2, DIGIC 6, LCD, ISO 12800, Full HD Movie, USB, HDMI mini, SD/SDHC/SDXC, Black\"",
"summary": "\"Canon 750D + EF-S 18-55mm, EOS. Megapixel: 24.2 MP, Camera type: SLR Camera Kit, Sensor type: CMOS. Focal length range (f-f): 18 - 55 mm, Minimum focal length (35mm film equiv): 2.9 cm, Maximum focal length (35mm film equiv): 8.8 cm. Focus: TTL-CT-SIR, Closest focusing distance: 0.25 m. ISO sensitivity: 100, 6400, 12800, Auto, Light exposure modes: Auto, Manual, Light exposure control: Program AE. Fastest camera shutter speed: 1/4000 s, Slowest camera shutter speed: 30 s, Camera shutter type: Electronic\"",
"shortSummary": "\"Canon EOS 750D + EF-S 18-55mm, ATW, Cloudy, Custom modes, Daylight, Flash, Fluorescent L, Shade, Tungsten, Food, Landscape, Sports, Movie, Single image, Slide show, Battery, SLR Camera Kit, TTL-CT-SIR\""
},
"category": null,
"preview": {
"id": 1,
"highRes": "http://images.icecat.biz/img/norm/high/26171112-1991.jpg",
"lowRes": "http://images.icecat.biz/img/norm/low/26171112-1991.jpg",
"manual": ""
}
}
所以，为了对这些进行排序，我使用map来创建一个这样的简单数组：
// Create our mapped array
var mapped = array.map(function (a, i) {
// Create our object
var obj = {
index: i,
name: a.details.title
};
// Return our object
return obj;
});
然后排序
mapped.sort();
一旦排序，我有一个如下所示的数组：
var mapped = [{
name: 'test1',
index: 4
}, {
name: 'test2',
index: 0
}, {
name: 'test3',
index: 3
}, {
name: 'test4',
index: 2
}, {
name: 'test5',
index: 1
}];
所以现在我想要重新组织 产品数组的已排序映射数组。 目前（这似乎是人们感到困惑的地方）我使用：
// Get our result
var result = mapped.map(function (item) {
return products[item.index];
});
但是这会创建一个 new 数组。我不想要新阵列，我想重新排序（不排序）现有的产品数组。
希望这能解释我想要实现的目标。
答案 0 :(得分：0)
我认为我的问题的答案是：
// Loop through our mapped items
mapped.forEach(function (mappedItem, i) {
// Get our item by the index
var item = array[mappedItem.index];
// Update the index
item.index = i;
});
// Sort our items
array.sort(function (a, b) {
// Return our value
return a.index === b.index ? 0 : a.index < b.index ? -1 : 1;
});