开放层3 - 命名空间“OL”启动时

Question

已经宣告错误，我使用的指令从here如何开始使用开放层，我得到了错误：Namespace "ol" already declared - source ol-debug.js和错误
this.Va is not a function - source ol.js

我很确定我已经在我的index.html中正确包含了ol.js，ol-debug.js和ol.css文件。

Link打开图层js和css文件。

这是有关部分从ol-debug.js文件 -

/** 
* Defines a namespace in Closure. 
* 
* A namespace may only be defined once in a codebase. It may be defined using 
* goog.provide() or goog.module(). 
* 
* The presence of one or more goog.provide() calls in a file indicates 
* that the file defines the given objects/namespaces. 
* Provided symbols must not be null or undefined. 
* 
* In addition, goog.provide() creates the object stubs for a namespace 
* (for example, goog.provide("goog.foo.bar") will create the object 
* goog.foo.bar if it does not already exist). 
* 
* Build tools also scan for provide/require/module statements 
* to discern dependencies, build dependency files (see deps.js), etc. 
* 
* @see goog.require 
* @see goog.module 
* @param {string} name Namespace provided by this file in the form 
*  "goog.package.part". 
*/ 
goog.provide = function(name) { 
    if (goog.isInModuleLoader_()) { 
    throw Error('goog.provide can not be used within a goog.module.'); 
    } 
    if (!COMPILED) { 
    // Ensure that the same namespace isn't provided twice. 
    // A goog.module/goog.provide maps a goog.require to a specific file 
    if (goog.isProvided_(name)) { 
     throw Error('Namespace "' + name + '" already declared.'); 
    } 
    } 

    goog.constructNamespace_(name); 
}; 

Answer 1

需要声明任何的ol.js或ol-debug.js不是两者。这个错误来自于你正在声明它们并且它正在创建一个命名空间冲突。