我正在研究什么是最大值,最小值是什么。为此,我使用Math.max.apply()
和Math.min.apply()
。
在我检查之前,我将一个Object转换为从和调用的GeoJson代码。
看起来像这样:
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
6.338356,
52.790868
],
[
6.378572,
52.648089
],
[
6.10522,
52.663572
],
[
6.089325,
52.798539
],
[
6.338356,
52.790868
]
]
]
},
"properties": {
"name": "DiggitTwoOne",
"regioFacetId": "tcm:106-353682-1024",
"level": 3,
"from": "10",
"to": "12"
}
},
{
"type": "Feature",
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
6.105498,
52.663816
],
[
6.378605,
52.648187
],
[
6.417051,
52.520692
],
[
6.173867,
52.509454
],
[
6.105498,
52.663816
]
]
]
},
"properties": {
"name": "DiggitTwoTwo",
"regioFacetId": "tcm:106-353682-1024",
"level": 3,
"from": "13",
"to": "15"
}
}
]
}
现在javascript代码如下所示:
var from = event.feature.getProperty("from");
var to = event.feature.getProperty("to");
var mergeObjects = JSON.parse(from,to);
console.log(Math.max.apply(Math,mergeObjects));
console.log(Math.min.apply(Math, mergeObjects));
当我运行javascript代码时,会出现如下错误: CreateListFromArrayLike在非对象上调用。
我正在使用对象。
我做错了什么,或者我是否错误地使用了它。
答案 0 :(得分:0)
你的问题是apply
接受了一个数组而你没有传递它:
var from = event.feature.getProperty("from"),
to = event.feature.getProperty("to"),
numArr = [from, to];
Math.max.apply(Math, numArr);
Math.min.apply(Math, numArr);
这是你要找的吗?