blocks|key|2265293|text|如果将strokeOpacity和fillOpacity设置为零并将多边形重置到地图，则可以执行此操作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2265294|这是Polygon原型的一个小技巧(这意味着您将可以在所有Polygon对象中访问它)，它将为您完成这件事|2265295|//+this+is+a+visibility+flag.+don't+change+it+manually
google.maps.Polygon.prototype._visible+=+true;

//+this+will+save+opacity+values+and+set+them+to+0,+and+rebound+the+polygon+to+the+map
google.maps.Polygon.prototype.hide+=+function(){
++++if+(this._visible)+{
++++++++this._visible+=+false;
++++++++this._strokeOpacity+=+this.strokeOpacity;
++++++++this._fillOpacity+=+this.fillOpacity;
++++++++this.strokeOpacity+=+0;
++++++++this.fillOpacity+=+0;
++++++++this.setMap(this.map);
++++}
}

//+this+will+restore+opacity+values.+and+rebound+the+polygon+to+the+map
google.maps.Polygon.prototype.show+=+function()+{
++++if+(!this._visible)+{
++++++++this._visible+=+true;
++++++++this.strokeOpacity+=+this._strokeOpacity;
++++++++this.fillOpacity+=+this._fillOpacity;
++++++++this.setMap(this.map);
++++}
}|code-block|syntax|javascript|2265296|现在你可以做BuyersEdge3.hide()和BuyersEdge3.show()了|offset|length|style|CODE|2265297|享受吧！|2265298|entityMap^0|0|0|0|6|I|P|I|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]|$K|Y|L|Z|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

you can do it if you set strokeOpacity and fillOpacity to zero and reset the polygon to the map.

here is a little hack for the Polygon prototype (meaning you will have access to it in all Polygon objects) that will do that thing for you

<pre><code>// this is a visibility flag. don't change it manually
google.maps.Polygon.prototype._visible = true;

// this will save opacity values and set them to 0, and rebound the polygon to the map
google.maps.Polygon.prototype.hide = function(){
 if (this._visible) {
 this._visible = false;
 this._strokeOpacity = this.strokeOpacity;
 this._fillOpacity = this.fillOpacity;
 this.strokeOpacity = 0;
 this.fillOpacity = 0;
 this.setMap(this.map);
 }
}

// this will restore opacity values. and rebound the polygon to the map
google.maps.Polygon.prototype.show = function() {
 if (!this._visible) {
 this._visible = true;
 this.strokeOpacity = this._strokeOpacity;
 this.fillOpacity = this._fillOpacity;
 this.setMap(this.map);
 }
}
</code></pre>

now you can do <code>BuyersEdge3.hide()</code> and <code>BuyersEdge3.show()</code>

enjoy!

blocks|key|3300577|text|这是我的想法，在我的网站上工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3300578|++++function+drawPolygon(p){
if(window.poly)window.poly.setMap(null);
++var+pp=[];
++for(var+i=0;i<p.length;i%2B=2)
++{
++++pp.push(new+google.maps.LatLng(parseFloat(p[i%2B1]),parseFloat(p[i])));
++}

++++window.poly=new+google.maps.Polygon({
++++++paths:+pp,
++++++strokeColor:+"#FF0000",
++++++strokeOpacity:+0.8,
++++++strokeWeight:+2,
++++++fillColor:+"#FF0000",
++++++fillOpacity:+0.1
++++});

++++window.poly.setMap(map);
++++google.maps.event.addListener(map,+'zoom_changed',+function()+{
if+(map.getZoom()>14)+{window.poly.setMap(null);}
else+{window.poly.setMap(map);}
++});
++}++|code-block|syntax|javascript|3300579|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is My idea, works on My site.

<pre><code> function drawPolygon(p){
if(window.poly)window.poly.setMap(null);
 var pp=[];
 for(var i=0;i&lt;p.length;i+=2)
 {
 pp.push(new google.maps.LatLng(parseFloat(p[i+1]),parseFloat(p[i])));
 }

 window.poly=new google.maps.Polygon({
 paths: pp,
 strokeColor: "#FF0000",
 strokeOpacity: 0.8,
 strokeWeight: 2,
 fillColor: "#FF0000",
 fillOpacity: 0.1
 });

 window.poly.setMap(map);
 google.maps.event.addListener(map, 'zoom_changed', function() {
if (map.getZoom()&gt;14) {window.poly.setMap(null);}
else {window.poly.setMap(map);}
 });
 } 
</code></pre>

blocks|key|2265311|text|您可以使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2265312|BuyersEdge3.setOptions({visible:false});|code-block|syntax|javascript|2265313|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use:

<pre><code>BuyersEdge3.setOptions({visible:false});
</code></pre>

blocks|key|3300581|text|++++if+(BuyersEdge3.map)
++++{
++++++++BuyersEdge3.setMap(null);
++++}+else+{
++++++++BuyersEdge3.setMap(map);
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3300582|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> if (BuyersEdge3.map)
 {
 BuyersEdge3.setMap(null);
 } else {
 BuyersEdge3.setMap(map);
 }
</code></pre>

blocks|key|5411900|text|根据文档，GMAP+POLYGON+GMAP+Polygon具有setVisible()函数，因此您可以使用它。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5411901|myPolygon.setVisible(false);+//+to+hide
myPolygon.setVisible(true);+//+to+show|code-block|syntax|javascript|5411902|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.google.com/maps/documentation/javascript/reference?hl=ru#PolygonOptions^0|5|C|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

According to documentation <a href="https://developers.google.com/maps/documentation/javascript/reference?hl=ru#PolygonOptions" rel="nofollow noreferrer">GMAP POLYGON</a> GMAP Polygon has setVisible() function, so you can use it. 

<pre><code>myPolygon.setVisible(false); // to hide
myPolygon.setVisible(true); // to show
</code></pre>

I've found the way to set the visibility of a marker using the following:

<pre><code> // create the marker 
 blueMarker = new google.maps.Marker({
 position: new google.maps.LatLng(33.514428, -112.29056534285377),
 draggable: true,
 raiseOnDrag: false,
 icon: './Images/blue3Marker.png',
 shapeType: 'BuyersEdgeArea',
 shapeID: '3'
 });

 // set the marker on the map
 blueMarker.setMap(map);
</code></pre>

Then I use blueMarker.setVisible(false) or blueMarker.setVisible(true) to make it visible/not visible.

But how to I do the same for a polygon?

Here's how I've set up my polygon:

<pre><code> BuyersEdge3 = new google.maps.Polygon({
 clickable: true,
 paths: BuyersEdgePath3,
 strokeColor: '#000000',
 strokeOpacity: 1,
 strokeWeight: 2,
 fillColor: ' #810541 ',
 fillOpacity: 0.35
 });

 // set the shape on the map
 BuyersEdge3.setMap(map);
</code></pre>

Now how would I make this shape not visible ?

My situation is that I have a checkbox where the user checks to either see or not see a polygon. The first time it's checked, I'll create the polygon but subsequent times, I just want to make the polygon shape visible or not.

I'm converting an Virtual Earth app where I could just "show" or "Hide" a layer with the polygon on it but I can't find something to do the trick for the Google API version 3 using JavaScript.

How can I set the visibility of a polygon using Google's version 3 API?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经找到了使用以下内容设置标记可见性的方法：            // create the marker             blueMarker = new google.maps.Marker({                position: new google.maps.LatLng(33.514...

问如何使用Google的版本3 API设置多边形的可见性？
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问如何使用Google的版本3 API设置多边形的可见性？EN