google map v3 使用自定义Marker在地图上添加文字标签
??????? 网上找了好久都是v2版本，没办法看看api吧。上面只有自定义叠加层，没有发现重写marker的功能。
??? 没办法，就用api的自定义叠加层吧。虽然可以实现带字的标记了，但是它没有marker那么多的功能，如果
?? 你javascript可以继续填充功能。
??? 使用的时候就调用这句话
/***************自定义叠加层，可作为站点显示在地图上******************/ function MyMarker(map, options) { // Now initialize all properties. this.latlng = options.latlng; //设置图标的位置 this.image_ = options.image; //设置图标的图片 this.labelText = options.labelText || '标记'; this.labelClass = options.labelClass || 'shadow';//设置文字的样式 this.clickFun = options.clickFun ;//注册点击事件 // this.labelOffset = options.labelOffset || new google.maps.Size(8, -33); this.map_ = map; this.div_ = null; // Explicitly call setMap() on this overlay this.setMap(map); } MyMarker.prototype = new google.maps.OverlayView(); //初始化图标 MyMarker.prototype.onAdd = function() { // Note: an overlay's receipt of onAdd() indicates that // the map's panes are now available for attaching // the overlay to the map via the DOM. // Create the DIV and set some basic attributes. var div = document.createElement('DIV'); //创建存放图片和文字的divdiv.style.border = "none"; div.style.borderWidth = "0px"; div.style.position = "absolute";div.style.cursor = "hand";div.onclick = this.clickFun ||function(){};//注册click事件，没有定义就为空函数// Create an IMG element and attach it to the DIV. var img = document.createElement("img"); //创建图片元素img.src = this.image_; img.style.width = "100%"; img.style.height = "100%"; //初始化文字标签var label = document.createElement('div');//创建文字标签label.className = this.labelClass;label.innerHTML = this.labelText;label.style.position = 'absolute'; label.style.width = '200px';//label.style.fontWeight = "bold";label.style.textAlign = 'left';label.style.padding = "2px";label.style.fontSize = "10px";//label.style.fontFamily = "Courier New";div.appendChild(img); div.appendChild(label); this.div_ = div; // We add an overlay to a map via one of the map's panes. // We'll add this overlay to the overlayImage pane. var panes = this.getPanes(); panes.overlayLayer.appendChild(div); } //绘制图标，主要用于控制图标的位置 MyMarker.prototype.draw = function() { // Size and position the overlay. We use a southwest and northeast // position of the overlay to peg it to the correct position and size. // We need to retrieve the projection from this overlay to do this. var overlayProjection = this.getProjection(); // Retrieve the southwest and northeast coordinates of this overlay // in latlngs and convert them to pixels coordinates. // We'll use these coordinates to resize the DIV. var position = overlayProjection.fromLatLngToDivPixel(this.latlng); //将地理坐标转换成屏幕坐标// var ne = overlayProjection.fromLatLngToDivPixel(this.bounds_.getNorthEast()); // Resize the image's DIV to fit the indicated dimensions. var div = this.div_; div.style.left =position.x-5 + 'px'; div.style.top =position.y-5 + 'px'; //控制图标的大小 div.style.width = '10px'; div.style.height ='10px'; } MyMarker.prototype.onRemove = function() { this.div_.parentNode.removeChild(this.div_); this.div_ = null; } //Note that the visibility property must be a string enclosed in quotes MyMarker.prototype.hide = function() { if (this.div_) { this.div_.style.visibility = "hidden"; } } MyMarker.prototype.show = function() { if (this.div_) { this.div_.style.visibility = "visible"; } } //显示或隐藏图标 MyMarker.prototype.toggle = function() { if (this.div_) { if (this.div_.style.visibility == "hidden") { this.show(); } else { this.hide(); } } } ?