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Javascript時鍾功能未在Rails應用程序上運行

[英]Javascript clock function not running on Rails app

第一次實時,我嘗試在Rails應用程序中使用Javascript,但是警報之外的所有內容似乎對我來說都沒有用。

我想做的就是讓這個簡單的時鍾在我的Rails應用程序上運行,幾乎將代碼復制到我認為應該去的地方,但是沒有任何作用,我所有的搜索要么太具體,要么似乎不工作。

我希望時鍾在整個站點范圍內都可用,但我也嘗試將其組織到特定的控制器及其觀點上,但運氣還不錯。

application.js

// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//
//= require jquery
//= require jquery_ujs
//= require turbolinks
//= require bootstrap-sprockets
//= require_tree ./sitewide

apps / assets / javascripts / sitewide / pages.js

function startTime() {
    var today=new Date();
    var h=today.getHours();
    var m=today.getMinutes();
    var s=today.getSeconds();
    m = checkTime(m);
    s = checkTime(s);
    document.getElementById('txt').innerHTML = h+":"+m+":"+s;
    var t = setTimeout(function(){startTime()},500);
}

function checkTime(i) {
    if (i<10) {i = "0" + i};  // add zero in front of numbers < 10
    return i;
}

application.html.erb

<!DOCTYPE html>
<html>
<head>
  <title>Clawk</title>
  <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
  <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
  <%= csrf_meta_tags %>


</head>
<body>


<%= render 'shared/navbar' %>

<div class="container-fluid">

<%= render 'shared/sidebar' %>

<div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
<div id="txt"></div>
<%= yield %>
</div>
</div>

</body>
</html>

您已經安裝了JavaScript,但是實際上並沒有在調用startTime()函數。 請注意,在示例中,它是通過bodyonload屬性onload<body onload="startTime()">

使用Rails,您可以將其添加到pages.js文件的末尾:

$(document).on('page:load', function() {
  startTime();
});

這將在頁面加載時在函數內執行代碼(並將與Turbolink兼容)。

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