HTML/Javascript中的圆形标签值
嗨,我有一个里程计算器的代码,但是显示的里程是一个很长的数字。我应该对代码进行哪些修改,以将显示的里程数四舍五入到小数点后一位 谢谢HTML/Javascript中的圆形标签值,javascript,html,label,rounding,Javascript,Html,Label,Rounding,嗨,我有一个里程计算器的代码,但是显示的里程是一个很长的数字。我应该对代码进行哪些修改,以将显示的里程数四舍五入到小数点后一位 谢谢 <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"/> <script type="text/javascript" src="http://maps.google.com/maps/ap
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var directionDisplay;
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var copenhagen = new google.maps.LatLng(55.6771, 12.5704);
var myOptions = {
zoom:12,
mapTypeId: google.maps.MapTypeId.ROADMAP,
center: copenhagen
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
directionsDisplay.setMap(map);
}
var directionsService = new google.maps.DirectionsService();
function calcRoute() {
var start = document.getElementById("start").value;
var end = document.getElementById("end").value;
var distanceInput = document.getElementById("distance");
var request = {
origin:start,
destination:end,
travelMode: google.maps.DirectionsTravelMode.DRIVING
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
distanceInput.value = response.routes[0].legs[0].distance.value / 1609.3440006146921597227828997904;
}
});
}
</script>
<title>Distance Calculator</title>
<style type="text/css">
body {
font-family:Helvetica, Arial;
}
#map_canvas {
height: 50%;
}
</style>
</head>
<body>
<body onload="initialize()">
<p>Enter your current location and desired destination to get the distance</p>
<div>
<p>
<label for="start">Start: </label>
<input type="text" name="start" id="start" />
<label for="end">End: </label>
<input type="text" name="end" id="end" />
<input type="submit" value="Calculate Route" onclick="calcRoute()" />
</p>
<p>
<label for="distance">Distance (km): </label>
<input type="text" name="distance" id="distance" readonly="true" />
</p>
</div>
<div id="map_canvas"></div>
</body>
</html>
javascript google geolocation maps
方向显示;
var映射;
函数初始化(){
directionsDisplay=new google.maps.DirectionsRenderer();
var哥本哈根=新的google.maps.LatLng(55.6771,12.5704);
变量myOptions={
缩放:12,
mapTypeId:google.maps.mapTypeId.ROADMAP,
中心:哥本哈根
}
map=new google.maps.map(document.getElementById(“map_canvas”),myOptions);
方向显示.setMap(地图);
}
var directionsService=new google.maps.directionsService();
函数calcRoute(){
var start=document.getElementById(“start”).value;
var end=document.getElementById(“end”).value;
var distanceInput=document.getElementById(“距离”);
var请求={
来源:start,
目的地:完,
travelMode:google.maps.Directions travelMode.DRIVING
};
路由(请求、功能(响应、状态){
if(status==google.maps.directionstatus.OK){
方向显示。设置方向(响应);
distance.value=response.routes[0]。legs[0]。distance.value/1609.3440006146921597227828997904;
}
});
}
距离计算器
身体{
字体系列:Helvetica,Arial;
}
#地图画布{
身高:50%;
}
输入当前位置和所需目的地以获取距离
开始:
完:
距离(公里):
谷歌地理位置地图
签出toFixed
:您是否检查了javascript或parseInt()中的round(),甚至子语句,但我不知道将它们放在何处。我试过做数学.round(distanceInput.value=response.routes[0]。legs[0]。distance.value/1609.3440006146921597227828997904);但它不起作用。有人能帮忙吗!!!