本文基于腾讯课堂老胡的课《跟我学Openlayers--基础实例详解》做的学习笔记，使用的openlayers 5.3.x api。
源码 见 1023.html ，对应的 官网示例 https://openlayers.org/en/latest/examples/min-max-resolution.html?q=ZIndex
在限制的范围之内时显示图层，在限制的范围之外时不显示图层
image.png
<!DOCTYPE html>
<html>
<head>
<title>限制图层的最大/最小分辨率
</title>
<link rel="stylesheet" href="../include/ol.css" type="text/css">
<script src="../include/ol.js"></script>
<script src="../include/jquery-3.1.1.min.js"></script>
</head>
<style>
</style>
<body>
<div>
<div id="map" class="map"></div>
<script>
//当分辨率2000~20000时，TileJSON图层显示；
//当分辨率大于20000时，TileJSON图层就显示不出来了，OSM图层就显示出来了
var map = new ol.Map({
layers: [
new ol.layer.Tile({
source: new ol.source.OSM(),
// minResolution: 200,
// maxResolution: 2000
}),
new ol.layer.Tile({
source: new ol.source.TileJSON({
url: 'https://api.tiles.mapbox.com/v4/mapbox.natural-earth-hypso-bathy.json?secure&access_token=pk.eyJ1IjoiYWhvY2V2YXIiLCJhIjoiY2pzbmg0Nmk5MGF5NzQzbzRnbDNoeHJrbiJ9.7_-_gL8ur7ZtEiNwRfCy7Q',
crossOrigin: 'anonymous'
}),
minResolution: 2000,
maxResolution: 20000
})
],
target: 'map',
view: new ol.View({
center: [653600, 5723680],
zoom: 5
})
});
</script>
</body>
</html>
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