Linked Questions

0 votes

2 answers

650 views

I'd like to give the user the option to upload a file, but it's not strictly necessary. This script seems to glitch if there is no file specified. How can I fix that? It seems like the line it really ...

0 votes

2 answers

578 views

I'm handling search feature onChange using Axios. It works fine. But the problem is when the user deletes input to empty. The request still sent. My code. handleSearch = (e) => { const ...

0 votes

1 answer

935 views

I would like if I scroll bottom of .dropdown-menu, load more 7 row in database. I don't know why not using this script. I'm using bootstrap css and js. I tried the bootstrap-select.js with live search,...

1 vote

3 answers

469 views

I have one validation that I need to perform. When a string is null or undefined or "" I need to show a message like "unable to perform further steps". If I do have values I need ...

-1 votes

3 answers

1k views

I have <table id="table1"> <tr> <td>&nbsp;</td> </tr> </table> I check for the value in using $('#table1 tr').find('td').eq(0).text() this equates to "...

0 votes

1 answer

508 views

I have a form, an input and a link. If the input has no value, clicking the link would direct to a certain url. If the input is NOT empty, then the click would have to submit the form. This is how the ...

1 vote

6 answers

271 views

I'm doing some validation on a calculator form I'm building and I want to a show a 'Please fill this field' message if the user hasn't entered a figure into the input. By default, the field has a '...

0 votes

3 answers

154 views

I have checked most of the posted questions, but what I am doing now is to check if JSON is empty. However, after debugging with Chrome, the JSON object contains only "[]" and is not empty. So if ...

-2 votes

3 answers

120 views

There is two kind of JavaScript code for investigating empty/full variable: if(variable == ''){} if(!variable){} I tested both of them, and I achieved identical result. Now I want to know, (first) ...

0 votes

2 answers

582 views

There are several ways to check if a input is empty, for example: $('input:text').val().length == 0 My problem is that i found no solution how to check if the input is empty or blank? How can i check ...

1 vote

2 answers

177 views

I need to evaluate if an object is empty. For example suppose I have an object: var home = ....; // this is an object and after I print it console.log(home) // the result of this option is [] ...

0 votes

1 answer

230 views

I have a code that checks for the answers in a Google Form, and if they match, it sends an email. The below code is working fine only if there is a value entered in the form. Since this is not a ...

1 vote

2 answers

90 views

i want to show alert and return false when the password and confirm password doesnt same or when the password is empty. here what i try. <div class="card margin-card-password"> <div ...

1 vote

4 answers

76 views

I tried using following method to ban users from leaving only space in the input area with no luck: method one: var formSub = $('#formsub').val(); if (formSub == null || formSub == "") { return ...

0 votes

2 answers

164 views

I have a file json but sometimes this file json doesn't have the image. Sometimes this item this empty: item.better_featured_image.media_details.sizes.medium.source_url render() { const { ...