Question

我有each这样的声明：

$.each(data, function(i, value) {

        sublayers.push({
            sql: "SELECT " + firstSel2 + ", cartodb_id, the_geom_webmercator FROM full_data_for_testing_deid_2 where " + firstSel2 + "='" + value.attri_1 + "'",
            cartocss: "#full_data_for_testing_deid_2 {marker-fill:"+color_here+";marker-width:5;marker-line-width: 0.2;marker-line-color:#fff;marker-allow-overlap: true;}"
       });     
    });

在cartocss部分中，有一个变量color_here。这就是我需要替换的东西。这需要是来自像这样的对象的十六进制值：

var myColors = ["#364C57",
"#666DD6",
"#867EAD",
"#1A3D76",
"#7F787F",
"#35304C",
"#1D5772",
"#15446B",
"#7382C0",
"#484A48",
"#454252",
"#333C6F"];

我需要的是每个语句为它循环的每个value提取其中一种颜色（从顶部开始）而不重复。假设在我上面的对象中永远不会有比我们的颜色更多的循环。有没有办法做到这一点，以确保颜色不会重复给定的每个语句？我可以提出从列表中随机选择的内容，但这会导致重复的可能性。

Answer 1

似乎您只需根据当前索引从数组中选择颜色：

var color_here = myColors[i];

不是吗？将它放在sublayers.push()之前。

Answer 2

也许这就是你想要的：

    var color_curr;
    var myColors = ["#364C57",
    "#666DD6",
    "#867EAD",
    "#1A3D76",
    "#7F787F",
    "#35304C",
    "#1D5772",
    "#15446B",
    "#7382C0",
    "#484A48",
    "#454252",
    "#333C6F"];
    $.each(data, function(i, value) {
    var color = myColors[i];
    if(color!=color_curr){
            sublayers.push({
                sql: "SELECT " + firstSel2 + ", cartodb_id, the_geom_webmercator FROM full_data_for_testing_deid_2 where " + firstSel2 + "='" + value.attri_1 + "'",
                cartocss: "#full_data_for_testing_deid_2 {marker-fill:"+color_here+";marker-width:5;marker-line-width: 0.2;marker-line-color:#fff;marker-allow-overlap: true;}"
           });  
    }
    color_curr=color;

});

将JSON中的特定非重复值推送到.each语句中

2 个答案: