在Javascript中访问变量
我有以下代码：在Javascript中访问变量,javascript,geolocation,Javascript,Geolocation,我有以下代码： function getLocation() { if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(showPosition); } else { alert('Geolocation is not supported by this browser'); } } function showPosition(position
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
}
else {
alert('Geolocation is not supported by this browser');
}
}
function showPosition(position) {
alert(position.coords.latitude + ' ' + position.coords.longitude);
var Loc = position.coords.latitude + ' ' + position.coords.longitude;
}
getLocation();
var rowId=timesheetGrid.uid();
var pos = timesheetGrid.getRowsNum();
timesheetGrid.addRow(rowId,["","","","<?php echo $ActiveWeek; ?>","","","","","","","","","","",Loc],0); //adds a new row with pre filled data
timesheetGrid.selectCell(rowId,0,false,true,true); // Focus on the new row
getLocation（）；
var rowId=timesheetGrid.uid（）；
var pos=timesheetGrid.getRowsNum（）；
timesheetGrid.addRow（行ID，[，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，Loc]，0）//添加带有预填充数据的新行
timesheetGrid.selectCell（rowId，0，false，true，true）；//关注新行
任何可以通过两种方式获得的帮助都将不胜感激
- 在函数外部声明Loc
var Loc = ''; function showPosition(position) { alert(position.coords.latitude + ' ' + position.coords.longitude); Loc = position.coords.latitude + ' ' + position.coords.longitude; } - 或者，只需删除Loc中的“var”。它现在被声明为全局（）
- 在函数外部声明Loc
var Loc = ''; function showPosition(position) { alert(position.coords.latitude + ' ' + position.coords.longitude); Loc = position.coords.latitude + ' ' + position.coords.longitude; } - 或者，只需删除Loc中的“var”。它现在被声明为全局（）
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(whenWeGetPosition);
}
else {
alert('Geolocation is not supported by this browser');
}
}
function whenWeGetPosition(position) {
// your code to use position
var rowId=timesheetGrid.uid();
var pos = timesheetGrid.getRowsNum();
timesheetGrid.addRow(rowId,["","","","<?php echo $ActiveWeek; ?>","","","","","","","","","","",Loc],0); //adds a new row with pre filled data
timesheetGrid.selectCell(rowId,0,false,true,true); // Focus on the new row
}
getLocation();
navigator.geolocation.getCurrentPosition（）正在异步模式下工作，函数showPosition（position）是用于捕获位置的回调函数。所以您需要将所有与位置相关的代码放在这个回调函数中。例如，您可以这样做：
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(whenWeGetPosition);
}
else {
alert('Geolocation is not supported by this browser');
}
}
function whenWeGetPosition(position) {
// your code to use position
var rowId=timesheetGrid.uid();
var pos = timesheetGrid.getRowsNum();
timesheetGrid.addRow(rowId,["","","","<?php echo $ActiveWeek; ?>","","","","","","","","","","",Loc],0); //adds a new row with pre filled data
timesheetGrid.selectCell(rowId,0,false,true,true); // Focus on the new row
}
getLocation();
为什么不返回该值？您设置了它，但不使用它做任何事情，这是毫无意义的。您从何处调用此方法？在函数范围之外声明它，从内部分配值。或者从函数返回它：
函数showPosition（position）{…；return Loc}函数showPosition（position）{…；return Loc}