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本文介绍了js实现百度地图同时显示多个路书效果，主要是以自行车的还车地点作为实例，具体代码如下：
启动路书：
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己的ak"></script> <script type="text/javascript" src="js/lushu.js"></script><!--路书 --></div>
var BMapLib = window.BMapLib = BMapLib || {};
(function() {
var b, a = b = a || {
version : "1.5.0"
};
a.guid = "$BAIDU$";
(function() {
window[a.guid] = window[a.guid] || {};
a.dom = a.dom || {};
a.dom.g = function(e) {
if ("string" == typeof e || e instanceof String) {
return document.getElementById(e)
} else {
if (e && e.nodeName && (e.nodeType == 1 || e.nodeType == 9)) {
return e
}
}
return null
};
a.g = a.G = a.dom.g;
a.lang = a.lang || {};
a.lang.isString = function(e) {
return "[object String]" == Object.prototype.toString.call(e)
};
a.isString = a.lang.isString;
a.dom._g = function(e) {
if (a.lang.isString(e)) {
return document.getElementById(e)
}
return e
};
a._g = a.dom._g;
a.dom.getDocument = function(e) {
e = a.dom.g(e);
return e.nodeType == 9 ? e : e.ownerDocument || e.document
};
a.browser = a.browser || {};
a.browser.ie = a.ie = /msie (\d+\.\d+)/i.test(navigator.userAgent) ? (document.documentMode || +RegExp["\x241"])
: undefined;
a.dom.getComputedStyle = function(f, e) {
f = a.dom._g(f);
var h = a.dom.getDocument(f), g;
if (h.defaultView && h.defaultView.getComputedStyle) {
g = h.defaultView.getComputedStyle(f, null);
if (g) {
return g[e] || g.getPropertyValue(e)
}
}
return ""
};
a.dom._styleFixer = a.dom._styleFixer || {};
a.dom._styleFilter = a.dom._styleFilter || [];
a.dom._styleFilter.filter = function(f, j, k) {
for (var e = 0, h = a.dom._styleFilter, g; g = h[e]; e++) {
if (g = g[k]) {
j = g(f, j)
}
}
return j
};
a.string = a.string || {};
a.string.toCamelCase = function(e) {
if (e.indexOf("-") < 0 && e.indexOf("_") < 0) {
return e
}
return e.replace(/[-_][^-_]/g, function(f) {
return f.charAt(1).toUpperCase()
})
};
a.dom.getStyle = function(g, f) {
var i = a.dom;
g = i.g(g);
f = a.string.toCamelCase(f);
var h = g.style[f] || (g.currentStyle ? g.currentStyle[f] : "")
|| i.getComputedStyle(g, f);
if (!h) {
var e = i._styleFixer[f];
if (e) {
h = e.get ? e.get(g) : a.dom.getStyle(g, e)
}
}
if (e = i._styleFilter) {
h = e.filter(f, h, "get")
}
return h
};
a.getStyle = a.dom.getStyle;
a.dom._NAME_ATTRS = (function() {
var e = {
cellpadding : "cellPadding",
cellspacing : "cellSpacing",
colspan : "colSpan",
rowspan : "rowSpan",
valign : "vAlign",
usemap : "useMap",
frameborder : "frameBorder"
};
if (a.browser.ie < 8) {
e["for"] = "htmlFor";
e["class"] = "className"
} else {
e.htmlFor = "for";
e.className = "class"
}
return e
})();
a.dom.setAttr = function(f, e, g) {
f = a.dom.g(f);
if ("style" == e) {
f.style.cssText = g
} else {
e = a.dom._NAME_ATTRS[e] || e;
f.setAttribute(e, g)
}
return f
};
a.setAttr = a.dom.setAttr;
a.dom.setAttrs = function(g, e) {
g = a.dom.g(g);
for ( var f in e) {
a.dom.setAttr(g, f, e[f])
}
return g
};
a.setAttrs = a.dom.setAttrs;
a.dom.create = function(g, e) {
var h = document.createElement(g), f = e || {};
return a.dom.setAttrs(h, f)
};
a.object = a.object || {};
a.extend = a.object.extend = function(g, e) {
for ( var f in e) {
if (e.hasOwnProperty(f)) {
g[f] = e[f]
}
}
return g
}
})();
var c = BMapLib.LuShu = function(g, f, e) {
if (!f || f.length < 1) {
return
}
this._map = g;
this._path = f;
this.i = 0;
this._setTimeoutQuene = [];
this._projection = this._map.getMapType().getProjection();
this._opts = {
icon : null,
speed : 4000,
defaultContent : ""
};
this._setOptions(e);
this._rotation = 0;
if (!this._opts.icon instanceof BMap.Icon) {
this._opts.icon = defaultIcon
}
};
c.prototype._setOptions = function(e) {
if (!e) {
return
}
for ( var f in e) {
if (e.hasOwnProperty(f)) {
this._opts[f] = e[f]
}
}
};
c.prototype.start = function() {
var f = this, e = f._path.length;
if (f.i && f.i < e - 1) {
if (!f._fromPause) {
return
} else {
if (!f._fromStop) {
f._moveNext(++f.i)
}
}
} else {
f._addMarker();
f._timeoutFlag = setTimeout(function() {
f._addInfoWin();
if (f._opts.defaultContent == "") {
f.hideInfoWindow()
}
f._moveNext(f.i)
}, 400)
}
this._fromPause = false;
this._fromStop = false
}, c.prototype.stop = function() {
this.i = 0;
this._fromStop = true;
clearInterval(this._intervalFlag);
this._clearTimeout();
for (var g = 0, f = this._opts.landmarkPois, e = f.length; g < e; g++) {
f[g].bShow = false
}
};
c.prototype.pause = function() {
clearInterval(this._intervalFlag);
this._fromPause = true;
this._clearTimeout()
};
c.prototype.hideInfoWindow = function() {
this._overlay._div.style.visibility = "hidden"
};
c.prototype.showInfoWindow = function() {
this._overlay._div.style.visibility = "visible"
};
a.object
.extend(
c.prototype,
{
_addMarker : function(f) {
if (this._marker) {
this.stop();
this._map.removeOverlay(this._marker);
clearTimeout(this._timeoutFlag)
}
this._overlay
&& this._map.removeOverlay(this._overlay);
var e = new BMap.Marker(this._path[0]);
this._opts.icon && e.setIcon(this._opts.icon);
this._map.addOverlay(e);
e.setAnimation(BMAP_ANIMATION_DROP);
this._marker = e
},
_addInfoWin : function() {
var f = this;
var e = new d(f._marker.getPosition(),
f._opts.defaultContent);
e.setRelatedClass(this);
this._overlay = e;
this._map.addOverlay(e)
},
_getMercator : function(e) {
return this._map.getMapType().getProjection()
.lngLatToPoint(e)
},
_getDistance : function(f, e) {
return Math.sqrt(Math.pow(f.x - e.x, 2)
+ Math.pow(f.y - e.y, 2))
},
_move : function(n, j, m) {
var i = this, h = 0, e = 10, f = this._opts.speed
/ (1000 / e), l = this._projection
.lngLatToPoint(n), k = this._projection
.lngLatToPoint(j), g = Math.round(i
._getDistance(l, k)
/ f);
if (g < 1) {
i._moveNext(++i.i);
return
}