setInterval()用于模拟时钟 [英] setInterval() for an analogue clock
问题描述
我对JavaScript还是很陌生,在使用 etInterval()
时遇到了麻烦。
我正在创建一个模拟时钟作为练习。我有一个函数 setTime()
,该函数通过相应地旋转箭头来获取并显示时间。
我想一次又一次地执行此功能。
这是我的代码:
$(document).ready (function(){
function setTime(){
var d = new Date();
var hour = d.getHours();
var minutes = d.getMinutes();
var hourRotation =小时* 30 +(分钟/ 2);
var minutesRotation =分钟* 6;
$(#small)。css({ b $ b -webkit-transform:旋转( + hourRotation + deg),
-moz-transform:旋转( + hourRotation + deg),
-o-transform: rotate( + hourRotation + deg)
});
$(#big)。css({
-webkit-transform: rotate( + minutesRotation + deg),
-moz-transform: rotate( + minutesRotation + deg),
-o-transform: rotate( + minutesRotation + deg)
});
};
函数clockStart(){
setInterval(setTime(),1000);
setTime();
}
clockStart();
});
我想了解这种方法及其使用方法。我能找到的示例看起来很明显,但仍然无法使它起作用。
您正在 setInterval()
中进行函数调用。 / p>
您要执行的操作是:
setInterval(setTime,1000 );
I'm quite new to JavaScript and I have trouble working with etInterval()
.
I'm creating an analogue clock as an exercise. I have a function setTime()
that gets and displays the time by rotating the arrows accordingly.
I want to execute this function again and again.
Here is my code :
$(document).ready(function(){
function setTime(){
var d = new Date();
var hour = d.getHours();
var minute = d.getMinutes();
var hourRotation = hour * 30 + (minute / 2);
var minuteRotation = minute * 6;
$("#small").css({
"-webkit-transform": "rotate(" + hourRotation + "deg)",
"-moz-transform": "rotate(" + hourRotation + "deg)",
"-o-transform": "rotate(" + hourRotation + "deg)"
});
$("#big").css({
"-webkit-transform": "rotate(" + minuteRotation + "deg)",
"-moz-transform": "rotate(" + minuteRotation + "deg)",
"-o-transform": "rotate(" + minuteRotation + "deg)"
});
};
function clockStart(){
setInterval(setTime(),1000);
setTime();
}
clockStart();
});
I'd like to understand this method and how to use it. The examples I could find looked so obvious, but still I can't make it work.
You are making a function call in setInterval()
.
What you want to do is :
setInterval(setTime,1000);
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