如何在Meteor应用程序中包含原始JavaScript代码

时间:2017-06-29 11:49:56

标签: javascript jquery html5 meteor meteor-blaze

我有一个在html页面上创建动画的JavaScript。在Meteor项目之外,动画效果很好,因为它只是html文件中包含的.js文件。我怎么能让它在Meteor上运行呢? javascript文件似乎根本不运行(它没有做任何事情)。 Meteor可以包含原始的javscript文件吗?如果是这样怎么样?该文件是纯JavaScript,没有助手或任何定义Meteor结构的东西。

missionPage.js

var TxtRotate = function(el, toRotate, period) {
    this.toRotate = toRotate;
    this.el = el;
    this.loopNum = 0;
    this.period = parseInt(period, 10) || 2000;
    this.txt = '';
    this.tick();
    this.isDeleting = false;
 };

 TxtRotate.prototype.tick = function() {
    var i = this.loopNum % this.toRotate.length;
    var fullTxt = this.toRotate[i];
    if (this.isDeleting) {
      this.txt = fullTxt.substring(0, this.txt.length - 1);
    } else {
      this.txt = fullTxt.substring(0, this.txt.length + 1);
    }
    this.el.innerHTML = '<span class="wrap">'+this.txt+'</span>';
    var that = this;
    var delta = 300 - Math.random() * 100;
    if (this.isDeleting) { delta /= 2; }
    if (!this.isDeleting && this.txt === fullTxt) {
      delta = this.period;
      this.isDeleting = true;
    } else if (this.isDeleting && this.txt === '') {
      this.isDeleting = false;
      this.loopNum++;
      delta = 500;
    }

  setTimeout(function() {
  that.tick();
  }, delta);
  };

  window.onload= function() {
  console.log('I m here');
  var elements = document.getElementsByClassName('txt-rotate');
  console.log(elements);
      for (var i=0; i<elements.length; i++) {
      var toRotate = elements[i].getAttribute('data-rotate');
      var period = elements[i].getAttribute('data-period');
      if (toRotate) {
      new TxtRotate(elements[i], JSON.parse(toRotate), period);
    }
    }
// INJECT CSS
    var css = document.createElement("style");
    css.type = "text/css";
    css.innerHTML = ".txt-rotate > .wrap { border-right: 0.08em solid #666 
  }";
    document.body.appendChild(css);
  };

missionPage.html

<template name="missionPage">
  <div class="ui center aligned container">
    <h3>Our story</h3>
    <h1>This website is
      <span
     class="txt-rotate"
     data-period="2000"
     data-rotate='[ "not just the website", "simple.", "pure JS.", 
 "pretty.", "fun!" ]'></span>
    </h1>
  </div>
</template>

1 个答案:

答案 0 :(得分:1)

您是否一直在阅读Guide to Meteor, specifically the section on app structure?如果没有,我会从那里开始。

回答你的问题:

  

Meteor可以包含原始JavaScript文件吗?

  

如果是这样的话?

有很多方法。您可以直接导入它:

import './txtRotate.js';

或者您可以将它放在client/compatibility目录中,它将在其他JS文件之前加载和执行。

最后,您的missionPage.js文件中只应包含与MissionPage Template相关的代码,而不是TxtRotate代码。将TxtRotate移至其自己的文件(window.onload部分除外),将其导入missionPage.js,并在呈现模板时对其进行初始化:

import { Template } from 'meteor/templating';
import './txtRotate.js';

Template.missionPage.onRendered(function() {
  this.$('.txt-rotate').each(function(i, element) {
    var toRotate = $(element).data('rotate');
    var period = $(element).data('period');

    if (toRotate) {
      new TxtRotate(this.get(0), JSON.parse(toRotate), period);
    }
  });
});

您拥有的另一个选项是将TxtRotate函数更改为reusable Blaze Component而不是独立函数。类似的东西:

<template name="missionPage">
  <div class="ui center aligned container">
    <h3>Our story</h3>
    <h1>This website is {{> TxtRotate period="2000" rotate=words}}</h1>
  </div>
</template>

在模板助手中定义words