Meteor.js中的简单时钟或如何重新加载模板?

时间:2016-04-14 14:55:38

标签: javascript templates meteor refresh clock

嘿伙计们我正在尝试使用meteor.js中的模板,但是如何在给定时间后重新加载它们? ,例如,我想要一个名为" time"必须每秒重新加载以显示当前时间,也是模板" date"必须每分钟重新加载一次,因为日期可以改变,或者每5分钟左右必须重新加载.ics的日历,总是准确的。

我当前的代码如下:

<body>
    <!-- TOP -->
    <div class="top left">{{> time }}</div>
    <div class="top mid"></div>
    <div class="top right">{{> date }}</div> 

</body>

<template name="time">
<div>{{ clock }}</div>
</template>

<template name="date">
<div>{{ date }}</div> 
</template>

js:

if (Meteor.isClient) {


    Template.time.helpers({
        clock: function () {
            var currentTime = new Date();
            var currentHours = currentTime.getHours();
            var currentMinutes = currentTime.getMinutes();
            var currentSeconds = currentTime.getSeconds();
            currentHours = ( currentHours < 10 ? "0" : "" ) + currentHours;
            currentMinutes = ( currentMinutes < 10 ? "0" : "" ) + currentMinutes;
            currentSeconds = ( currentSeconds < 10 ? "0" : "" ) + currentSeconds;
            return currentHours + ":" + currentMinutes + ":" + currentSeconds;
        }

    });

    Tempate.date.helpers({
        date: function () {
            var month = ["Januar", "Februar", "März", "April", "Mai", "Juni", "July", "August", "September", "October", "November", "Dezember"];
            var d = date.getDate();
            var m = date.getMonth();
            var y = date.getFullYear();
            return d + " " + month[m] + " " + y;
        }
    });

}

请帮助我提高知识水平!

-Tim4497

1 个答案:

答案 0 :(得分:4)

重新加载模板的最简单方法是提供和更改被动数据源。在您的情况下,这可能是时钟值。

var clock = new ReactiveVar(new Date());

Template.time.onCreated(function() {
  Meteor.setInterval(function() {
    clock.set(new Date());
  }, 1000);
});

Template.time.helpers({
  clock: function() {
    var currentTime = clock.get();
    ... 
  },
});