我使用jquery和json数组来显示网站上的当前月相和日出/设定时间。这适用于日出/设置,但对于月相,我遇到了问题。
当"最近期"是在请求数据的同一天2其他字段被删除 - " currentphase"和" fracillum"。这意味着我不能每月4次显示相位或电流照明......
例如,下面的链接显示了fracillum和当前阶段: http://api.usno.navy.mil/rstt/oneday?date=today&coords=54.97N,1.61W&tz=0
但是从这些数据中省略: http://api.usno.navy.mil/rstt/oneday?date=01/28/2017&coords=54.97N,1.61W&tz=0
我已经编写了下面的代码来说明,如果curphase和fracillum未定义并且,那么最近的就是" New Moon"或者"满月"然后显示" 0%或" 100%"的fracillum分别
请有人确定我做错了什么吗?
$(document).ready(function(){
$.get("http://api.usno.navy.mil/rstt/oneday?date=01/28/2017&coords=54.97N,1.61W&tz=0", function(data){
checkPhase(data);
});
});
$(document).ready(function(){
$("#suntimes").click(function(){
$("#sun").toggle("slide");
});
});
$(document).ready(function(){
$("#moontimes").click(function(){
$("#moon").toggle("slide");
});
});
$(document).ready(function(){
$("#Mobilesuntimes").click(function(){
$("#Mobilesun").slideToggle();
});
});
$(document).ready(function(){
$("#Mobilemoontimes").click(function(){
$("#Mobilemoon").slideToggle();
});
});
function checkPhase(data){
if(data.curphase == "undefined" && data.closestphase.phase == "New Moon"){data.fracillum == "0%";}
else if(data.curphase == "undefined" && data.closestphase.phase == "Full Moon")
{data.fracillum == "100%";}
$("#sun").append("<p><b>Newcastle, UK</b><br />Sunrise: " + data.sundata[1].time + " AM<br />Sunset: " + data.sundata[3].time + " PM</p>" );
$("#moon").append("<p><b>Newcastle, UK</b><br />Percentage Illuminated: " + data.fracillum + "<br />Moon Phase: " + data.curphase + "</p>" );
$("#Mobilesun").append("<p><b>Newcastle, UK</b><br />Sunrise: " + data.sundata[1].time + " AM<br />Sunset: " + data.sundata[3].time + " PM</p>" );
$("#Mobilemoon").append("<p><b>Newcastle, UK</b><br />Percentage Illuminated: " + data.fracillum + "<br />Moon Phase: " + data.curphase + "</p>"
);
}
答案 0 :(得分:1)
使用typeof data.curphase == "undefined"
代替data.curphase == "undefined"
var a = 1;
if ( typeof a == "undefined" )
alert (" a is undefined" )
if ( typeof b == "undefined" )
alert (" b is Undefined" )
&#13;
答案 1 :(得分:0)
如果您想检查undefined
值,请使用value === undefined
代替value === "undefined"
,因为您要检查curphase
是否为字符串"undefined"
。
此外,您不会为data.fracillum
分配值,因为比较(data.fracillum == "0%";
)而不是作业(data.fracillum = "0%";
)。
你的情况应该是这样的:
if (data.curphase === undefined && data.closestphase.phase === "New Moon") {
data.fracillum = "0%";
} else if (data.curphase === undefined && data.closestphase.phase === "Full Moon") {
data.fracillum = "100%";
}