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HarmonyOS
1、javascript里求如何调用局部变量；
alert放在函数里可以显示，但是放在外面显示是undefined。
2、代码如下：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
body, html,#allmap {width: 90%;height: 90%;overflow: hidden;margin:0;font-family:"微软雅黑";}
</style>
<script src="http://search.dangdang.com/Standard/Search/Extend/hosts/js/jquery.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=nCRvMdrWkhF3kg0RsTdUvku6"></script>
<title>出行</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
var map = new BMap.Map("allmap");
map.centerAndZoom(new BMap.Point(118.799154,32.066449), 12);
map.enableScrollWheelZoom();
var ttime;
var tdistance;
var s;
var p1 = new BMap.Point(118.790662,32.057327);
var p2 = new BMap.Point(118.812128,32.046538);
var searchComplete = function (results){
if (transits.getStatus() != BMAP_STATUS_SUCCESS){
return ;
}
var plan = results.getPlan(0);
this.ttime = plan.getDuration(true); //获取时间
tdistance = plan.getDistance(true); //获取距离
};
var transits = new BMap.TransitRoute(map, {renderOptions: {map: map},
onSearchComplete: searchComplete});
transits.search(p1, p2);
alert(ttime)
</script>
</html>
html5
这个searchComplete是个回调，请求完成了就对ttime赋值了，你放在外面，请求都没完成，没触发到回调，ttime自然就是undefined