JS code not successfully querying the API

JS code not successfully querying the API - javascript

I created a fairly simple application to query a third-party API.
My issue is that I expected to get the entire URI http://uinames.com/api/?region=japan& in the console (see console.log(…)) but I only get the ?region=japan& part.
I am not getting any error, does anyone can spot what is wrong with my implementation ?
My code
// Execute the function to query the API
function loadNames(e) {
e.preventDefault();
// Read the values from the form and create the variables
const origin = document.getElementById('#country').value;
const gender = document.getElementById('gender').value;
const amount = document.getElementById('quantity').value;
// Build the URL
let url = 'http://uinames.com/api/?';
// Read the origin and append to url
if (origin !== '') {
url += `region=${origin}&`;
}
console.log(url);
}
document.querySelector('#generate-names').addEventListener('submit', loadNames);
<body>
<div class="container">
<div id="content" class="content">
<h1>Generate Names</h1>
<form id="generate-names" action="#">
<div class="row">
<div class="six-columns">
<label for="country">Filter By Country:</label>
<select class="u-full-width" name="country">
<option value="">-- Select --</option>
<option value="argentina">Argentina</option>
<option value="brasil">Brasil</option>
<option value="colombia">Colombia</option>
<option value="costa rica">Costa Rica</option>
<option value="france">France</option>
<option value="italy">Italy</option>
<option value="mexico">Mexico</option>
<option value="portugal">Portugal</option>
<option value="united states">United States</option>
<option value="india">India</option>
<option value="japan">Japan</option>
</select>
<label for="gender">Gender:</label>
<select class="u-full-width" id="gender">
<option value="">-- Select --</option>
<option value="male">Male</option>
<option value="female">Female</option>
</select>
<label>Number of names to generate</label>
<input type="number" id="quantity" class="u-full-width" min="5" max="15" value="5">
<input class="button-primary u-full-width" type="submit" value="Generate">
</div>
<div class="six-columns">
<div id="result"></div>
</div>
</div>
</form>
</div>
</div>
</body>

It works fine.
I fixed a few errors though.
const origin = document.getElementById('#country').value
Should be (without the #)
const origin = document.getElementById('country').value
No id had been asigned to the select input
<select class="u-full-width" name="country" id="country">
If you run the fiddle, you will see it works as expected.
document.querySelector('#generate-names').addEventListener('submit', loadNames);
// Execute the function to query the API
function loadNames(e) {
e.preventDefault();
// Read the values from the form and create the variables
const origin = document.getElementById('country').value;
const gender = document.getElementById('gender').value;
const amount = document.getElementById('quantity').value;
// Build the URL
let url = 'http://uinames.com/api/?';
// Read the origin and append to url
if (origin !== '') {
url += `region=${origin}&`;
}
console.log(url);
}
<div class="container">
<div id="content" class="content">
<h1>Generate Names</h1>
<form id="generate-names" action="#">
<div class="row">
<div class="six-columns">
<label for="country">Filter By Country:</label>
<select class="u-full-width" name="country" id="country">
<option value="">-- Select --</option>
<option value="argentina">Argentina</option>
<option value="brasil">Brasil</option>
<option value="colombia">Colombia</option>
<option value="costa rica">Costa Rica</option>
<option value="france">France</option>
<option value="italy">Italy</option>
<option value="mexico">Mexico</option>
<option value="portugal">Portugal</option>
<option value="united states">United States</option>
<option value="india">India</option>
<option value="japan">Japan</option>
</select>
<label for="gender">Gender:</label>
<select class="u-full-width" id="gender">
<option value="">-- Select --</option>
<option value="male">Male</option>
<option value="female">Female</option>
</select>
<label>Number of names to generate</label>
<input type="number" id="quantity" class="u-full-width" min="5" max="15" value="5">
<input class="button-primary u-full-width" type="submit" value="Generate">
</div>
<div class="six-columns">
<div id="result"></div>
</div>
</div>
</form>
</div>
</div>

Related

javascript calculation on calculating once a client clicks on a form option

I am doing a small project on creating an order form.
I am trying to display the price per page once the client selects the time.
For example if the selected time is 4hour it should return 12usd.. if its 6hours it should return 10 usd......
<div class="col-md-6">
<div class=" custom-select" style="width:200px;">
<select class="form-control" id="time">
<option value="0">Time...</option>
<option value="1">4hrs</option>
<option value="2">6hrs</option>
<option value="3">1day</option>
<option value="4">2days</option>
<option value="5">3days</option>
<option value="6">4days</option>
<option value="7">5days</option>
<option value="8">6days</option>
<option value="9">7days</option>
<option value="10">After 7 days</option>
</select>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label class="bmd-label-floating">cpp</label>
<input type="text" class="form-control" id="cpp">
</div>
</div>

You can make something like this.
const selectElement = document.querySelector('.ice-cream');
selectElement.addEventListener('change', (event) => {
const result = document.querySelector('.result');
result.textContent = `You like ${event.target.value}`;
});
<label>Choose an ice cream flavor:
<select class="ice-cream" name="ice-cream">
<option value="">Select One …</option>
<option value="chocolate">Chocolate</option>
<option value="sardine">Sardine</option>
<option value="vanilla">Vanilla</option>
</select>
</label>
<div class="result"></div>

So you won't tell us in details so we have to guess
const prices = [0,12,10,9,8,7,6,5,4,3,2],
cpp = document.getElementById('cpp'),
time = document.getElementById('time')
time.addEventListener('change',function() {
cpp.value = prices[this.value]
})
// init if the select is already set from server
const change = new CustomEvent("change");
time.dispatchEvent(change);
<div class="col-md-6">
<div class=" custom-select" style="width:200px;">
<select class="form-control" id="time">
<option value="0">Time...</option>
<option value="1">4hrs</option>
<option value="2">6hrs</option>
<option value="3">1day</option>
<option value="4">2days</option>
<option value="5">3days</option>
<option value="6">4days</option>
<option value="7">5days</option>
<option value="8">6days</option>
<option value="9">7days</option>
<option value="10">After 7 days</option>
</select>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label class="bmd-label-floating">cpp</label>
<input type="text" class="form-control" id="cpp">
</div>
</div>

How to select from dropdown and reflect on the url like this sample.com/past_questions/chemistry/?exam_div=gce&exam_year=2018

<div class="row" style="margin-bottom:40px">
<div class="col-xs-12 col-sm-6">
<p><strong><label> Examination Division</strong></label>
</p>
<div>
<select type="text" name="exam_div" onchange="location = this.options[this.selectedIndex].value;" class="form-control" style="margin-bottom:15px;padding:0px 10px;font-size:16px;">
<option value selected>Select exam division </option>
<option value="https://sample.com/past-questions/chemistry/?&exam_div=jamb">JAMB</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_div=gce"> GCE</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_div=alevel">A LEVEL</option>
</select>
</div>
</div>
<div class="col-xs-12 col-sm-6">
<p><strong><label>Examination Year</strong></label>
</p>
<div>
<select type="text" name="exam_div" onchange="location = this.options[this.selectedIndex].value;" class="form-control" style="margin-bottom:15px;padding:0px 10px;font-size:15.5px;">
<option value selected>Select an exam year</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2018">2018</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2017">2017</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2016">2016</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2015">2015</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2014">2014</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2013">2013</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2012">2012</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2011">2011</option>
</select>
</div>

combine the two drop downdowns into a single url that includes both the division and year
Keep it simple:
put only the div/year values on the option value, not the whole url
add the base url to a findable location with data-
add events with jquery, not onclick=
use .on("change"... on both the selects and check that both values have been entered
combine all 3 (url+2x values) into a url and redirect (commented out below)
$(".selection select").on("change", function() {
var division = $("#exam_div").val();
var year = $("#exam_year").val();
if (division === "" || year === "")
return;
var url = $(".selection").data("url") + "?exam_div=" + division + "&exam_year=" + year;
//location.href = url;
console.log(url);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class='selection' data-url='https://sample.com/past-questions/chemistry'>
<div>
<p><strong>Examination Division</strong></p>
<div>
<select name="exam_div" id="exam_div">
<option value selected>Select exam division </option>
<option value="jamb">JAMB</option>
<option value="gce"> GCE</option>
<option value="alevel">A LEVEL</option>
</select>
</div>
</div>
<div>
<p><strong>Examination Year</strong>
</p>
<div>
<select name="exam_year" id="exam_year">
<option value selected>Select an exam year</option>
<option value="2018">2018</option>
<option value="2017">2017</option>
<option value="2016">2016</option>
<option value="2015">2015</option>
<option value="2014">2014</option>
<option value="2013">2013</option>
<option value="2012">2012</option>
<option value="2011">2011</option>
</select>
</div>
</div>
</div>
from a UX perspective, this would be better with the click of a "GO" button rather than select on change and the change event fires when changing select options with the keyboard.

<select type="text" name="exam_div" id="examdiv" class="form-control" style="margin-bottom:15px;padding:0px 10px;font-size:15.5px;">
<option value selected>Select an exam year</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2018">2018</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2017">2017</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2016">2016</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2015">2015</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2014">2014</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2013">2013</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2012">2012</option>
<option value="https://sample.com/past-questions/chemistry/?&exam_year=2011">2011</option>
</select>
use jquery try this
$(document).on('click', '#examdiv', function(){
window.location.replace($('this').val());
});

How to set parameter values to a "onClick" function using javascript or jquery

I am trying to set parameters to onClick event inside a html button using javascript.
This is how html button looks like:
<button type="button" id="upload-button" onclick="uploadFileIGCSE('param1', 'param2', 'param3')" class="btn btn-success" aria-expanded="false">Upload</button>
param1 = should be the value from a html select element with id='year' and name='year'
param2 = should be the value from a html select element with id='grade' and name='grade'
param3 = should be the value from a html select element with id='subject' and name='subject'
These are the html select options
<div class="col-md-3">
<select id="year" name="year" class="form-control">
<option value="select" disabled="disabled">- Select Year -</option>
<option value="1">2001</option>
<option value="2">2002</option>
<option value="3">2003</option>
</select>
</div>
<div class="col-md-3">
<select id="grade" name="grade" class="form-control">
<option value="select" disabled="disabled">- Select Grade -</option>
<option value="1">Grade 5</option>
<option value="2">Grade 6</option>
<option value="3">Grade 7</option>
</select>
</div>
<div class="col-md-3">
<select id="subject" name="subject" class="form-control">
<option value="select" disabled="disabled">- Select Subject -</option>
<option value="1">Edexcel</option>
<option value="2">National</option>
<option value="3">Other</option>
</select>
</div>
I have no clue how to set values to param1, param2, param3
This is what I tried but it feels wrong.
$('#upload-button').val = $('#year').val;
Can someone please help me?
I need to set values for the parameters (param1, param2, param3) in the function uploadFileIGCSE('param1', 'param2', 'param3') using javascript or jquery
Thank you

I can understand your needs. if you really wanted to do this only with HTML element, here is the way.
<button type="button" id="upload-button"
onclick="uploadFileIGCSE(
document.querySelector('#year').value,
document.querySelector('#grade').value,
document.querySelector('#subject').value)"
class="btn btn-success" aria-expanded="false">Upload</button>
Here is the working example
function uploadFileIGCSE(val1, val2, val3){
document.querySelector('#log').innerHTML = `${val1}, ${val2}, ${val3}`
}
<div class="col-md-3">
<select id="year" name="year" class="form-control">
<option value="select" disabled="disabled">- Select Year -</option>
<option value="1">2001</option>
<option value="2">2002</option>
<option value="3">2003</option>
</select>
</div>
<div class="col-md-3">
<select id="grade" name="grade" class="form-control">
<option value="select" disabled="disabled">- Select Grade -</option>
<option value="1">Grade 5</option>
<option value="2">Grade 6</option>
<option value="3">Grade 7</option>
</select>
</div>
<div class="col-md-3">
<select id="subject" name="subject" class="form-control">
<option value="select" disabled="disabled">- Select Subject -</option>
<option value="1">Edexcel</option>
<option value="2">National</option>
<option value="3">Other</option>
</select>
</div>
<button type="button" id="upload-button"
onclick="uploadFileIGCSE(
document.querySelector('#year').value,
document.querySelector('#grade').value,
document.querySelector('#subject').value)"
class="btn btn-success" aria-expanded="false">Upload</button>
<p>log value : (<span id="log"></span>)</p>

You really shouldn't be using inline event listeners like onclick (for maintainability, security and separation of concerns reasons).
Instead, add the listener using the DOM API's HTMLElement.prototype.addEventListener():
document.getElementById('upload-button').addEventListener('click', function() {
uploadFileIGCSE(year.value, grade.value, subject.value);
})
function uploadFileIGCSE(x,y,z) {
console.log(x,y,z);
}
document.getElementById('upload-button').addEventListener('click', function() {
uploadFileIGCSE(year.value, grade.value, subject.value);
})
<div class="col-md-3">
<select id="year" name="year" class="form-control">
<option value="select" disabled="disabled">- Select Year -</option>
<option value="1">2001</option>
<option value="2">2002</option>
<option value="3">2003</option>
</select>
</div>
<div class="col-md-3">
<select id="grade" name="grade" class="form-control">
<option value="select" disabled="disabled">- Select Grade -</option>
<option value="1">Grade 5</option>
<option value="2">Grade 6</option>
<option value="3">Grade 7</option>
</select>
</div>
<div class="col-md-3">
<select id="subject" name="subject" class="form-control">
<option value="select" disabled="disabled">- Select Subject -</option>
<option value="1">Edexcel</option>
<option value="2">National</option>
<option value="3">Other</option>
</select>
</div>
<button type="button" id="upload-button">Upload</button>

try this
<button type="button" id="upload-button" onclick="getOption()" class="btn btn-success"
aria-expanded="false">Upload</button>
function getOption() {
var year = document.getElementById("year");
var year_option = year.options[year.selectedIndex].value;
var grade = document.getElementById("grade");
var grade_option = grade.options[grade.selectedIndex].value;
var subject = document.getElementById("subject");
var subject_option = subject.options[subject.selectedIndex].value;
uploadFileIGCSE(year_option, grade_option, subject_option)
}

$('#upload-button').click(function(e) {
var year = $('#year').val();
var grade = $('#grade').val();
var subject = $('#subject').val();
uploadFileIGCSE(year, grade, subject);
})
You could try something like this.

The click event can simply run an anonymous function. Its only input will be the default event object supplied by the DOM engine. That function can then gather the values from the various elements you're interested in, and make a further call to the uploadFileIGCSE function, passing those values as parameters.
Here's a demo. Note that I've used an unobtrusive event handler using addEventListener() in the JS code, rather than "onclick" within the HTML. This is generally considered to be better practice, as it makes the code easier to read, maintain and debug, and helps to separate the functionality from the presentation.
N.B. you could use jQuery for any/all of this, but equally it's not really necessary, it doesn't really add much value in this situation.
var button = document.getElementById("upload-button");
button.addEventListener("click", function(event) {
var year = document.getElementById("year").value;
var grade = document.getElementById("grade").value;
var subject = document.getElementById("subject").value;
uploadFileIGCSE(year, grade, subject);
});
function uploadFileIGCSE(year, grade, subject) {
console.log(year, grade, subject);
}
<button type="button" id="upload-button" onclick="uploadFileIGCSE('param1', 'param2', 'param3')" class="btn btn-success" aria-expanded="false">Upload</button>
<div class="col-md-3">
<select id="year" name="year" class="form-control">
<option value="select" disabled="disabled">- Select Year -</option>
<option value="1">2001</option>
<option value="2">2002</option>
<option value="3">2003</option>
</select>
</div>
<div class="col-md-3">
<select id="grade" name="grade" class="form-control">
<option value="select" disabled="disabled">- Select Grade -</option>
<option value="1">Grade 5</option>
<option value="2">Grade 6</option>
<option value="3">Grade 7</option>
</select>
</div>
<div class="col-md-3">
<select id="subject" name="subject" class="form-control">
<option value="select" disabled="disabled">- Select Subject -</option>
<option value="1">Edexcel</option>
<option value="2">National</option>
<option value="3">Other</option>
</select>
</div>

Display a required text input when Other is selected

I need to add a text input that displayed only when the other is selected. And make this input required if it is shown. One thing more, I need to enter that input to the same table in the database. Can anyone help? Please!
<form action="" method="post">
<div class="row">`enter code here`
<div class="col-sm-8 col-sm-offs et-2">
<select class="form-control" name="country" id="country" required>
<option value="">Please select your country</option>
<option value="A">Country A</option>
<option value="B">Country B</option>
<option value="C">Country C</option>
<option value="Other">Other</option>
</select>
<button type="submit" class="btn btn-gpsingh">Next</a>
</div>
</div>
</form>

Try this
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="" method="post">
<div class="row">
<div class="col-sm-8 col-sm-offs et-2">
<select class="form-control" name="country" id="country" required >
<option value="">Please select your country</option>
<option value="A">Country A</option>
<option value="B">Country B</option>
<option value="C">Country C</option>
<option value="Other">Other</option>
</select>
<input type ="text" id="country_other" style="display:none">
<button type="submit" class="btn btn-gpsingh">Next</a>
</div>
</div>
</form>
<script>
$("#country").change(function(){
var value = this.value;
if(value =='Other')
{
$("#country_other").show();
$("#country_other").prop('required',true);
$("#country_other").val('');
}
else
{
$("#country_other").hide();
$("#country_other").prop('required',false);
$("#country_other").val('');
}
});
</script>

Making a different value the default using javascript

I am trying to make the default value different than what is defined in the HTML. I cannot change the HTML because it is locked by a parent company of ours. I can however change the default if I use javascript. Here is the HTML
<div class="col-md-6">
<div id="addressTypeWrapper" class="form-group">
<label for="addressListArray[0].addressTypeString">Type</label>
<select name="addressListArray[0].addressTypeString" id="addressListArray[0].addressTypeString" class="form-control" required >
<option value="Home" selected="selected">Home</option>
<option value="Office">Office</option>
<option value="Contact">Contact</option>
<option value="Other">Other</option>
<option value="Billing">Billing</option>
<option value="Purchaser">Purchaser</option>
<option value="Foreign">Foreign</option>
<option value="Agency">Agency</option>
<option value="Summer">Summer</option>
<option value="School">School</option>
<option value="Campus">Campus</option>
<option value="Temporary">Temporary</option>
<option value="Shipping">Shipping</option>
<option value="Local">Local</option>
<option value="Permanent">Permanent</option></select>
</div>
</div>
Now how would I make the Office value the default only using javascript?

Simply use that one line of javascript below to change the value on runtime
document.getElementById('addressListArray[0].addressTypeString').value = 'Office';
<div class="col-md-6">
<div id="addressTypeWrapper" class="form-group">
<label for="addressListArray[0].addressTypeString">Type</label>
<select name="addressListArray[0].addressTypeString" id="addressListArray[0].addressTypeString" class="form-control" required >
<option value="Home" selected="selected">Home</option>
<option value="Office">Office</option>
<option value="Contact">Contact</option>
<option value="Other">Other</option>
<option value="Billing">Billing</option>
<option value="Purchaser">Purchaser</option>
<option value="Foreign">Foreign</option>
<option value="Agency">Agency</option>
<option value="Summer">Summer</option>
<option value="School">School</option>
<option value="Campus">Campus</option>
<option value="Temporary">Temporary</option>
<option value="Shipping">Shipping</option>
<option value="Local">Local</option>
<option value="Permanent">Permanent</option></select>
</div>
</div>

!function(){var e=document.getElementsByTagName("option");e[0].selected=!1,e[1].selected=!0}();
<div class="col-md-6">
<div id="addressTypeWrapper" class="form-group">
<label for="addressListArray[0].addressTypeString">Type</label>
<select name="addressListArray[0].addressTypeString" id="addressListArray[0].addressTypeString" class="form-control" required>
<option value="Home" selected="selected">Home</option>
<option value="Office">Office</option>
<option value="Contact">Contact</option>
<option value="Other">Other</option>
<option value="Billing">Billing</option>
<option value="Purchaser">Purchaser</option>
<option value="Foreign">Foreign</option>
<option value="Agency">Agency</option>
<option value="Summer">Summer</option>
<option value="School">School</option>
<option value="Campus">Campus</option>
<option value="Temporary">Temporary</option>
<option value="Shipping">Shipping</option>
<option value="Local">Local</option>
<option value="Permanent">Permanent</option>
</select>
</div>
</div>

Select the dropdown and use .val(). If its a dynamic id then add another attribute like data-dropdown="list" as I have done below
$("select[data-dropdown='list']").val('Office');

Develop Reference

JavaScript is the programming language of the Web.

JS code not successfully querying the API - javascript

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