有没有一种方法来检查地理位置是否已经用Javascript降低了？ [英] Is there a way to check if geolocation has been DECLINED with Javascript?

问题描述

如果地理位置被拒绝，我需要JavaScript来显示手动条目。

I need JavaScript to display a manual entry if geolocation is declined.

我尝试过：

Modernizr.geolocation
navigator.geolocation

描述用户以前是否拒绝过对地理定位的访问。

Neither describes if user has previously declined access to geolocation.

推荐答案

watchPosition 和 getCurrentPosition 都接受第二个回调，当有错误时调用它。错误回调为错误对象提供了一个参数。对于拒绝的权限， error.code 将会是 error.PERMISSION_DENIED （数值 1 < code $）。

watchPosition and getCurrentPosition both accept a second callback which is invoked when there is an error. The error callback provides an argument for an error object. For permission denied, error.code would be error.PERMISSION_DENIED (numeric value 1).

在这里阅读更多： https://developer.mozilla.org/en/Using_geolocation

示例：

navigator.geolocation.watchPosition(function(position) {
  console.log("i'm tracking you!");
},
function (error) { 
  if (error.code == error.PERMISSION_DENIED)
      console.log("you denied me :-(");
});

编辑：正如@Ian Devlin指出的那样，似乎Firefox（本文发表时为4.0.1）支持这一点行为，它在Chrome和中可能正常运行 Safari等。

As @Ian Devlin pointed out, it doesn't seem Firefox (4.0.1 at the time of this post) supports this behavior. It works as expected in Chrome and probably Safari etc.

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