Question

我需要的是当我点击一个单元格，例如包含“PMS03”的单元格[2,2]时，我想要一个显示包含PMS03的所有单元格的警报，这将是警报（“位置” ：[2,1]，[2,2]，[3,7]“）;

我认为不知怎的，我会在创建“pointmapS”（= puntmapS）的过程中制作第二个数组，但我认为最好的想法是让像你这样的专家来帮助我，因为应该有我可能不知道的相当多的解决方案（并且更有效）。

enter image description here

创建映射数组：

var jPunten = JSON.parse(data); 
var puntmapS = []; 
var cardsS = []; 
var prevCard = jPunten[0].KARTNR; //previous card starts with the first card
cardsS[0] = jPunten[0].KARTNR;
//Generate point arrays
for (var i=0;i<jPunten.length;i++)
{
    if(prevCard!=jPunten[i].KARTNR){
        // (fill in cardsS, saves kartnr of the rows) gap-safety for if there should be gaps in the KARTNR's, currently only used for scounter
        cardsS[sCounter+1]=jPunten[i].KARTNR;sCounter++;
    } 
    //create an array under key jPunten[i].KARTNR, if it doesn't exist already
    puntmapS[sCounter] = puntmapS[sCounter] || []; // to avoid gaps we use sCounter instead of jPunten[i].KARTNR
    //then, assign your value
    console.log("S|| prevCard: "+ prevCard + " === " + jPunten[i].KARTNR +" (Kartnr)");

    puntmapS[sCounter][jPunten[i].BITNRK-1] = jPunten[i].STATDEV; //add point to row, -1 because array starts at 0

    console.log("S|| "+"  --SCounter: "+ sCounter + " bit: " + jPunten[i].BITNRK + "    = " + jPunten[i].STATDEV);
}

创建表格：

if(puntmapS.length!=0){
    table = "<table style='margin-left:20px;font-size:80%;' border='1'><tbody><tr><th></th><th>1</th><th>2</th><th>3</th><th>4</th><th>5</th><th>6</th><th>7</th><th>8</th><th>9</th><th>10</th><th>11</th><th>12</th><th>13</th><th>14</th><th>15</th><th>16</th></tr><tr><th>"+cardsS[0]+ " S</th>";
    for (var i=0;i<sCounter+1;i++)
    {
        for (var x=0;x<16;x++)
        {
            if(puntmapS[i][x]!=undefined)
            {
                table+= "<td><a href='#' onClick='alert(\""+puntmapS[i][x]+"\")'>"+puntmapS[i][x]+"</a></td>";
            }
            else
            {
                table += "<td style='background-color:#E6E6E6'><a href='#' onClick='alert(\"EMPTY\")'>&nbsp;</a></td>";
            }
        }
        if(i<(sCounter)){
            table+="</tr><tr><th>"+(cardsS[i+1])+" S</th>";
        }
    }
    table += "</tr></table>";
}

jPunten看起来像这样：

0
    Object { 0="LSZ09 ", 1="1", 2="S", more...} 
0
    "LSZ09 "    
1
    "1" 
2
    "S" 
3
    "0" 
4
    "1" 
5
    "0" 
6
    "I "    
BITNRK
    "1" 
BITSTATUS
    "0" 
DEVPKT
    "1"
KARTNR
    "0"
PKTTYP
    "S"
STATDEV
    "LSZ09 "    
TYPE
    "I "

Answer 1

我的主要建议是使用underscoreJS，因为它有很多有用的辅助函数来操作数组，从而节省了大量的输入。作为您尝试解决的特定问题的解决方案，您可以使用以下内容：

var arr = [['a', undefined], ['b', 'a']] //2x2 2D test array
var result = _.chain(arr) //Create chainable underscore object
    .map(function(row, j){ //map cell values to objects containing both the value and position in the array
        return _.map(row, function(cell, i){
            return { pos: [i,j], value: cell };
        })
    })
    .flatten() //Put all cells in a single array
    .filter(function(cell){ //Filter the cells based on some criterium
        return cell.value === 'a';
    })
    .map(function(cell){ //Return the position rather than the object we generated
        return cell.pos;
    })
    .value(); //Return the original array instead of the chainable underscore object

Answer 2

你可以创建一个关联数组，其中键是'PMSO3'，值是一个包含位置数组的对象。

map = [];
map['PMSO3'] = {
    label: 'PMS03-100',
    id: 124,
    positions: [{
        x: 2,
        y: 1
    }, {
        x: 2,
        y: 2
    }, {
        x: 3,
        y: 7
    }]
};

console.log('PMSO3 is located at these positions\n');
map['PMSO3'].positions.forEach(function(aPosition){
    console.log(aPosition.x+' '+aPosition.y+',');
});

JSFiddle

基于多维数组制作关联值数组的最佳方法

2 个答案: