javascript 对象没有方法“indexOf”
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Object has no method 'indexOf'
提问by Erik
I have the following function (taken from Elevation Service @ Google Maps API) which output for example 63.00425720214844when I click somewhere on the map I have created with Google Maps JavaScript API v3:
我有以下函数（取自Elevation Service @ Google Maps API），例如63.00425720214844当我单击使用Google Maps JavaScript API v3创建的地图上的某处时输出：
function getElevation(event) {
var locations = [];
var clickedLocation = event.latLng;
locations.push(clickedLocation);
var positionalRequest = {
'locations': locations
}
elevator.getElevationForLocations(positionalRequest, function(results, status) {
if(status == google.maps.ElevationStatus.OK) {
var s = results[0].elevation
if(results[0]) {
alert(s.substring(0, s.indexOf('.') - 1));
} else {
alert('Inget resultat hittades');
}
} else {
alert('Det gick inte att hitta h?jdskillnaden p? grund av f?ljande: ' + status);
}
});
}
I want to remove everything after the dot including the dot, for example remove .00425720214844from 63.00425720214844but when I click somewhere on the map, I'm getting this error message in the console: Uncaught TypeError: Object 63.00425720214844 has no method 'indexOf'.
我想删除点之后的所有内容，包括点，例如 remove .00425720214844from63.00425720214844但是当我单击地图上的某个位置时，我在控制台中收到此错误消息：Uncaught TypeError: Object 63.00425720214844 has no method 'indexOf'。
What have I done wrong?
我做错了什么？
Thanks in advance.
提前致谢。
回答by Guffa
The variable sdoesn't contain a string.
该变量s不包含字符串。
You can turn it into a string using:
您可以使用以下方法将其转换为字符串：
s = s.toString();
If it's a number, you can just use numeric functions instead:
如果它是一个数字，您可以只使用数字函数：
alert(Math.floor(s));
回答by Marc
Just do a javascript parseInt(63.00425720214844)to get 63.
只需执行 javascriptparseInt(63.00425720214844)即可获得 63。
