Common JavaScript Framework Startup Errors

Currently, I am delving into the world of JavaScript and experimenting with various thingamajigs. Could someone kindly shed some light on why my script is throwing errors?

// Effects object
var effects = {
 // Display an object
 show : function(obj) {
  obj.style.display = 'block';
 },
 // Hide an object
 hide : function(obj) {
  obj.style.display = 'hide'; 
 },
 // Toggle
 toggle : function(obj) {
  if (obj instanceof Array) {
   alert('array');
  } else {
   alert('single'); 
  }
 }
}

// Selector Class
var s = {
 id : function(name) {
  return document.getElementById(name);
 },
 class : function(name) {
  node = document.getElementsByTagName("body")[0];
  var a = [];
  var re = new RegExp('\\b' + classname + '\\b');
  var els = node.getElementsByTagName("*");
  for(var i=0,j=els.length; i<j; i++)
   if(re.test(els[i].className))
    a.push(els[i]);
  return a;
 }
}

window.onload = function() {
 s.id('toggle-content').onclick(function() {
  effects.toggle(s.class('hidden-content'));
 });
}

The following errors are popping up:

Upon page load:

Error: s.id("toggle-content").onClick is not a function Source File: http://localhost/cms/web/js/admin.js Line: 40

By the way, is there a standardized method to fetch a class from the dom efficiently?

Mystery solved!

Replace onClick() with onclick= instead.

Answer №1

Event names in JavaScript do not adhere to the camelCase style used for properties and methods. They are all in lowercase format. To resolve this issue, simply change onClick to onclick.

As a side note, some browsers already have built-in support for getElementsByClassName (which seems to be what you're looking for). There are also alternative solutions available for browsers that do not support it.

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