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How to populate a form box with javascript based on other form box inputs


How to populate a form box with javascript based on other form box inputs

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How to populate a form box with javascript based on other form box inputs
Tag : javascript , By : PPD
Date : November 24 2020, 09:00 AM

will help you You can add a event for when the inputs change and calculate the salary based off of their values. Quick mock up.
Fiddle: http://jsfiddle.net/AtheistP3ace/6uatoyd2/
function calculateSalary () {

    // Get all values we need to calculate
    var wage = parseInt(document.getElementById('wage').value, 10);
    var hours = parseInt(document.getElementById('hours').value, 10);
    var weeks = parseInt(document.getElementById('weeks').value, 10);

    // Calculate salary
    var salary = wage * hours * weeks;

    // Only update salary if we got number
    if (!isNaN(salary)) {
        document.getElementById('salary').value = salary;
    }

}

// Get all inputs, loop and attach change event with calculateSalary handler
var inputs = document.getElementsByTagName('input');
var index = 0, length = inputs.length
for ( ; index < length; index++) {
    inputs[index].addEventListener('change', calculateSalary);
}
<input type="text" id="wage" placeholder="wage" />
<input type="text" id="hours" placeholder="hours" />
<input type="text" id="weeks" placeholder="weeks" />
<input type="text" id="salary" placeholder="salary" />

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Can you re-populate file inputs after failed form submission with PHP or JavaScript?


Tag : php , By : user185949
Date : March 29 2020, 07:55 AM
will be helpful for those in need I think the short answer here is no. You can't repopulate file upload fields. However, you can work around it.
If a file has been selected and the form submitted, then you've already received the file. What you can do is keep a reference to the file on disk and put that in a hidden field and show a message to indicate to the user you still have their file uploaded so it does not need to be replaced/re-uploaded. When your form gets submitted again without a file, you can check for the hidden field value and use that to get your local copy of the file they uploaded in their last attempt.

How to use Javascript to populate a select form (i.e. dropdown) based on elements in a class


Tag : javascript , By : CHeMoTaCTiC
Date : March 29 2020, 07:55 AM
will be helpful for those in need You can populate the dropdown by appending option elements to the select element, using the select element's add() method.
var select = document.getElementById("Id_of_my_select_element");
var option = document.createElement("option");
option.value = "option value"; 
option.innerHTML = "option text";
select.add(option);
for(var i = 0; i < x.length; i++){
    x[i].setAttribute("data-option",i);
}
var select = document.getElementById("dropdown");
var pages = document.querySelectorAll(".star-pagination");
// Loop through all matching elements
for (var i = 0, len = pages.length; i < len; i++) {
  // Give the element a custom property by which we can retrieve it
  pages[i].setAttribute("data-option", i);
  // Get the page number from the element
  var text = pages[i].innerHTML;
  var pageNumber = text.slice(1, text.length);
  // Add a corresponding option to the select dropdown
  var option = document.createElement("option");
  option.value = i;
  option.innerHTML = pageNumber;
  select.add(option);
}
select.addEventListener("change", function() {
  var targetElement = document.querySelector("[data-option='" + this.value + "']");
  targetElement.scrollIntoView();
});
#output {
  background-color: #dfdfdf;
  color: darkred;
  font-weight: bold;
  border: 1px solid black;
}
.star-pagination {
  color: blue;
}
<select id="dropdown">
  <options>
    <option>Please choose a page</option>
  </options>
</select>
<div style="max-height:150px;overflow:scroll;">
  <div id="text">The point of using Lorem Ipsum is that it has a more-or-less normal
    <span class="star-pagination">*112</span> distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model
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  <br/>
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Tag : jquery , By : Shawazi
Date : March 29 2020, 07:55 AM
seems to work fine I have models in my Rails 4 app for Projects and Interests. The associations are: , Add this to your view
<%= link_to 'Participate', new_task_path(@eoi, participate: true) %>

<%= link_to 'Monitor', new_task_path(@eoi, observe: true) %>
def new
  @task = Task.new
  @participate = params[:participate] # will be nil if observe link was clicked
  @observe = params[:observe]
end
<%= f.input :observe, checked: @observe, as: :radio_buttons, :label => "Do you want to monitor this project?" %>
<%= f.input :participate, checked: @participate, as: :radio_buttons, :label => "Do you want to participate in this project?" %>
def new
  @task = Task.new
  @participate = params[:participate] || false
  @observe = params[:observe] || false
end

Real Time Javascript Calculation Based On Form Inputs


Tag : javascript , By : user182548
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Here's a working JSFiddle.
You've been confusing Javascript and jQuery codes.
// Wrong code:
document.getElementById('#total_expenses').value(sum)
//Correct code:
document.getElementById('total_expenses').value() = sum

Generate a table in modal box on submitting a form based on the inputs given in form


Tag : javascript , By : Monev
Date : March 29 2020, 07:55 AM
it fixes the issue Edit the #myModal div after the form is submitted.
Use this Javascript code.
$(function(){
    $('#form1').submit(function(event){
    event.preventDefault();
    if($('#form1')[0].checkValidity() ){
        zinPrefix='<div class="modal-dialog"><div class="modal-content"><div class="modal-header"><button type="button" data-dismiss="modal" class="close">&times;</button><h4 class="modal-title">Results</h4></div><div class="modal-body">';
        zinSuffix='</div><div class="modal-footer"><button type="button" data-dismiss="modal" class="btn btn-default">Close</button></div></div></div>';
        zinTable="";
        var $inputs = $('#form1 :input');
        //var values = {};
        $inputs.each(function() {
        val = $(this).val();
        if(val!="")
              zinTable += val +" \t | \t ";
        });
        zinStr = zinPrefix + zinTable + zinSuffix;
        $("#myModal").html(zinStr);
        $('#myModal').modal('toggle');
    }
    });
});
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