Within this section, I have multiple input text fields all sharing the same class:
<input type="text" class="MyClass"></input>
<input type="text" class="MyClass"></input>
<input type="text" class="MyClass"></input>
My goal is to determine whether or not all input fields with this class are empty. I attempted the following code:
if(!('.MyClass').val()){
alert("empty");
}
Unfortunately, this did not produce the desired result. Can someone provide guidance?
Make sure to validate input fields before submitting
$('button').click(function() {
var $nonempty = $('.MyClass').filter(function() {
return this.value != ''
});
if ($nonempty.length == 0) {
alert('Please fill out all required fields')
}
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input type="text" class="MyClass" />
<input type="text" class="MyClass" />
<input type="text" class="MyClass" />
<button>Submit</button>Alternatively, you can use a flag for validation
$('button').click(function() {
var flag = false;
$('.MyClass').filter(function() {
if (this.value != '') {
flag = true;
//no need to iterate further
return false;
}
});
if (!flag) {
alert('Please fill out all required fields')
}
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input type="text" class="MyClass" />
<input type="text" class="MyClass" />
<input type="text" class="MyClass" />
<button>Submit</button>To determine if all input fields are empty, you can compare the number of filled input fields with the total number of input fields in a JavaScript code snippet:
var alleEmptyLength = $(".MyClass").filter(function() {
return this.value.length !== 0;
});
if($('.MyClass').length == allemptylength.length){
alert("all empty");
}
Ensuring that all classes are inspected, follow this code:
$.each($('.MyClass'),function() {
if ($(this).val().length == 0) {
alert('empty');
}
});
To verify it, you can follow these steps:
var isEmpty = !$('.MyClass').filter(function() {
return this.value.trim();
}).length;
Additionally, make sure to eliminate all instances of </input> tags since input elements are self-closing.
give this a shot
let hasEmptyValue;
$('.MyClass').each(function(index) {
if ($(this).val() == '') {
hasEmptyValue = true;
}
});
if (hasEmptyValue) {
alert('All inputs are empty');
}
experiment with the jQuery method is(':checked')
$('.MyClass').each(function(){
alert($(this).is(':checked');)
});
by using this code, you will receive alerts only for the elements that are checked.
$('input').each(function(i,v){
if($(this).val()!=''){
$(this).addClass('done');
}else{
$(this).removeClass('inactive');
$(this).addClass('alert');
$(this).css('border', '1px solid blue');
//perform another action...
}
});
Give this a shot, it's guaranteed to work flawlessly.
const emptyInputCount = $(".MyClass").filter(function() {
return this.value === "";
}).length;
if (emptyInputCount > 0) {
alert("Please make sure to fill in all parameter values");
return;
}
Appreciate your help.
Give this a shot, it never fails me
var check = 1;
$(".MyClass").each(function(i){
if ($(this).val() == "")
check++;
});
if (check == 1)
alert('all fields are populated');
else
alert('some or all fields are empty');
I'm providing all the necessary details for this question, however I am confused as to why my callback function is returning an Unhandled Promise Rejection even though I deliberately want to catch the error: (node:3144) UnhandledPromiseRejectionWarni ...
I have been attempting to create a search query to locate a user by their username. Here is the code: userRouter.get('/user/:user_username', function(req, res) { console.log("GET request to '/user/" + req.params.user_username + "'"); ...
I have encountered an issue while trying to convert a Rijndael encryption function from C# to Node. Despite using the same Key, IV, Mode, and Block Size, I am unable to achieve matching results. What could be causing this discrepancy? C# MRE: using System ...
I have been searching for solutions here but haven't had any luck so far. I am currently learning HTML and while working on a simple login feature, I have run into some issues. I am using XML as a makeshift "database" and PHP to retrieve the informati ...
I have a collection of available job listings stored in my temporary variable. I am interested in extracting specific text from these listings individually. How can I retrieve text from nested classes? In the provided code snippet, I encountered empty lin ...
Could really use some assistance with sorting an array of objects in javascript. My users array looks like this: var users = [ { first: 'Jon', last: 'Snow', email: '<a href="/cdn-cgi/l/email-protection" class="__ ...
There is a plain string in my possession which contains various conditions. const optionString = '{2109} AND ({2370} OR {1701} OR {2702}) AND {1234} AND ({2245} OR {2339})'; The goal is to transform this string into an object structured as foll ...
I am in the learning phase with Node and attempting to display validation errors (using express-validator and express 4) when a user submits a form. The validator appears to be functioning properly because when I log the data to the console, everything lo ...
I have retrieved some data from MySQL and I am looking to integrate it into a vue.js data property for seamless iteration using v-for. What is the ideal format to use (JSON or array) and how can I ensure that the data is properly accessible in vue.js? &l ...
These questions have been popping up all over the web with little response. I've added some CSS in jQuery like this: $('#object').css('background-image', 'url(../../Content/Images/green-tick.png)'); This works in all b ...
var bookRate = new Array('The Right to differ', 'Issues In Contemporary Documentary', 'Writing, Directing and Producing', 'Lee Kuan Yew My Lifelong Challenge'); var selection = document.rate.checkbox; var sum = 0.00 ...
I need to create a 3D floor with cartoons placed on top. The floor has a grid where each cartoon is positioned. I want to maintain the same axis for both the floor and grid, but I need the images and text in each grid element to be at a 90-degree angle to ...
What is the best way to include double quotes in a JavaScript string for display on a webpage? I'm currently tackling my JavaScript assignment and need to insert double quotes within a list, like the example below: if (i == 0) { error += "<l ...
Is there a way to read 2D JSON data? An example of a JSON file is given below: [ { "name":"Menu1", "permission":"1", "link":"http://naver.com" }, { "name":"Menu2", "permission":"2", "link":"http://daum.net", ...
I'm currently working on a script that checks if the user input in an email field contains specific text. It's almost there, but it only detects exact matches instead of partial matches. If the user enters anything before the text I'm trying ...
I am currently working on implementing a list of events, each with a tick box and an x box for marking the event as complete or deleted. The challenge I'm facing is that when I click the buttons, nothing happens without refreshing the page. I suspect ...
I have been attempting to loop through a JSON object using the code below, but I am encountering issues with the iteration: function iterateRows() { var timein_rows = [{"id":"72","date":"2012-08-01"},{"id":"73","date":"2012-08-01"}]; $.each(timein ...
Is there a way to decrease the size of the label for a form input? In this scenario, attempting to set the fontSize does not work: <Form.Input label="Username" style={{fontSize: '10px'}} /> Does anyone have any suggestions on how to res ...
I want to correctly set up the data parameter for the ajax call. <script type="text/javascript"> $(document).ready(function() { $('#call').click(function () { $.ajax({ type: "post", ...
I've been struggling with this problem for a few days now. My goal is to achieve a similar effect to what is on this website: I want to highlight a link when the mouse hovers over a thumbnail, with a transition effect. I think it has something to do ...