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Javascript/JS - Referring to classes and variables dynamically within a change event loop


Javascript/JS - Referring to classes and variables dynamically within a change event loop

By : Viperboy
Date : December 01 2020, 04:52 PM
around this issue I'm trying to cut down this list of class change functions to one neat loop using an array for the class names used in the change event. , Got there in the end:
code :

var total = 0
var click99 = false;

var question = [15.99, 20.99, 5.99, 2.99];
var click = [false, false, false, false];

//classnames
var D7codes = ['.d7-r6','.d7-r7','.d7-r8','.d7-r9']


D7codes.forEach( function( value, index ) {
  $ (value).change( function() {
    click[index] = !click[index];
    if (!click99) {
      total += click[index] ? question[index] : -question[index] 
    } else { 
      totalOrig += click[index] ? question[index] : -question[index] 
    }
    var totalFloat = parseFloat(total).toFixed(2)
    $ ('.asum-total').text(totalFloat);
  });

});


$ ('.d7-r99').change( function() {
  click99 = !click99; 
  if (click99) {
    totalOrig = total;
    total = 0;
  } else { 
    total = totalOrig; 
  };
  var totalFloat = parseFloat(total).toFixed(2);
  $ ('.asum-total').text(totalFloat);
});




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Create variables dynamically with a For Loop Javascript

Create variables dynamically with a For Loop Javascript


By : user3449685
Date : March 29 2020, 07:55 AM
wish of those help The title plus the following example are self-explanatory of what I don't achieve :-) The idea is to replace something + counter in order to make it work. , You could create an array, but much more simply:
code :
  for (var counter = 1; counter <= 6; counter++) {
    $('element' + counter).removeAttribute('class');
  } 
How to dynamically instantiating an class referring othere classes

How to dynamically instantiating an class referring othere classes


By : C-sharp Guy
Date : March 29 2020, 07:55 AM
I wish this helpful for you
When compiling SayHello, the class path should hold the library of the class contained in Say Hello Class.
How can I change the attribute of parent class by dynamically referring to its static variables?

How can I change the attribute of parent class by dynamically referring to its static variables?


By : user3159799
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I'm reading new 'variable = value' pairs in a child class. The 'variable' is read as a string. The value varies, it can be and an integer, float, boolean etc. Reading multiple of such pairs is also possible. There are so many options for variables that doing things dynamically seems like the only feasible option. , Try this:
code :
for variable_name, value in self.received_dictionary.items():
    setattr(Person, variable_name, value)
for variable_name, value in self.received_dictionary.items():
    setattr(self.__class__.__bases__[0], variable_name, value)
How can I dynamically change my sequential variables in a do-while loop? (PHP)

How can I dynamically change my sequential variables in a do-while loop? (PHP)


By : Lachlan Dunlop
Date : March 29 2020, 07:55 AM
Hope this helps , Use an array:
Can you dynamically add an event listener to variables in a for loop using Javascript

Can you dynamically add an event listener to variables in a for loop using Javascript


By : kathiravan
Date : March 29 2020, 07:55 AM
around this issue I am trying to dynamically add an eventlistener to a group of li tags that will toggle a CSS class , Some problems to fix:
code :
const item = document.querySelectorAll('#dynamic-list li');

const strikeOut = function() {
  this.classList.toggle('strike-item');
}

const addClass = function() {
  for (let i = 0; i < item.length; i++) {
    let link = item[i];
    link.onclick = strikeOut;
  }
}

addClass();
.strike-item {
  text-decoration: line-through;
}
<ul id="dynamic-list" style="list-style: none;">
  <li class="dynamic-item">Item 1</li>
  <li class="dynamic-item">Item 2</li>
  <li class="dynamic-item">Item 3</li>
  <li class="dynamic-item">Item 4</li>
  <li class="dynamic-item">Item 5</li>
</ul>
document.querySelector('#dynamic-list')
  .addEventListener('click', (e) => {
    const { target } = e;
    if (!target.matches('li.dynamic-item')) return;
    target.classList.toggle('strike-item');
  });
.strike-item {
  text-decoration: line-through;
}
<ul id="dynamic-list" style="list-style: none;">
  <li class="dynamic-item">Item 1</li>
  <li class="dynamic-item">Item 2</li>
  <li class="dynamic-item">Item 3</li>
  <li class="dynamic-item">Item 4</li>
  <li class="dynamic-item">Item 5</li>
</ul>
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