Develop Reference

How to get focusin for all textbox? using javascript event not using jquery

Hello Guys, I need help a little bit. Can anyone help me, how to use
this keyword in my case?
<form>
<div class="form-group">
<label for="txtFirstName">Your name</label>
<input id="txtFirstName" name="txtFirstName" type="text" autocomplete="off" class="inputBox" />
</div>
<div class="form-group">
<label for="txtEmail">Email address</label>
<input id="txtEmail" name="txtEmail" type="email" autocomplete="off" class="inputBox" />
</div>
<div class="form-group">
<select id="drpPosition" name="drpPosition">
<option>I would describe my user type as </option>
<option>Web developer </option>
<option>Web designer </option>
</select>
</div>
<div class="form-group">
<label for="txtPassword">Password</label>
<input id="txtPassword" type="password" class="cool" autocomplete="off" class="inputBox" />
<small>Minimum 8 characters</small>
</div>
<div class="form-group">
<input type="submit" name="btnSubmit" id="btnSubmit" value="Next" />
</div>
</form>
This is my JavaScript Code:
var inputFirstName = document.querySelector('.inputBox');
console.log(inputFirstName);
this.addEventListener('focusin', inputAddClassFunc);
this.addEventListener('focusout', inputRemoveClassFunc);
function inputAddClassFunc(event){
console.log(this);
this.previousElementSibling.classList.add('active');
}
function inputRemoveClassFunc(event){
var hasValue = this.value;
if(!hasValue) {
this.previousElementSibling.classList.remove('active');
}
}
When I focusin into the textbox, active class will be added to it's
sibling's lable And in my case, It only works in first textbox but not
for all textbox. How can I use "this" to works for all textbox?

I'd use event delegation instead - add focusin and focusout listeners to the form, and when the event fires, if the target of the event is one of the .inputBoxes, carry out the logic to change the class of the event.target.previousElementSibling:
const form = document.querySelector('form');
form.addEventListener('focusin', inputAddClassFunc);
form.addEventListener('focusout', inputRemoveClassFunc);
function inputAddClassFunc(event) {
if (event.target.matches('.inputBox')) {
event.target.previousElementSibling.classList.add('active');
}
}
function inputRemoveClassFunc(event) {
if (event.target.matches('.inputBox')) {
var hasValue = event.target.value;
if (!hasValue) {
event.target.previousElementSibling.classList.remove('active');
}
}
}
.active {
background-color: yellow;
}
<form>
<div class="form-group">
<label for="txtFirstName">Your name</label>
<input id="txtFirstName" name="txtFirstName" type="text" autocomplete="off" class="inputBox" />
</div>
<div class="form-group">
<label for="txtEmail">Email address</label>
<input id="txtEmail" name="txtEmail" type="email" autocomplete="off" class="inputBox" />
</div>
<div class="form-group">
<select id="drpPosition" name="drpPosition">
<option>I would describe my user type as </option>
<option>Web developer </option>
<option>Web designer </option>
</select>
</div>
<div class="form-group">
<label for="txtPassword">Password</label>
<input id="txtPassword" type="password" autocomplete="off" class="inputBox" />
<small>Minimum 8 characters</small>
</div>
<div class="form-group">
<input type="submit" name="btnSubmit" id="btnSubmit" value="Next" />
</div>
</form>
Also note that if you want the txtPassword element to have the inputBox class, you should change
<input id="txtPassword" type="password" class="cool" autocomplete="off" class="inputBox" />
to
<input id="txtPassword" type="password" autocomplete="off" class="inputBox" />
(remove the duplicate cool attribute)

Submitting Form in a popup window

I know that this might seem like a duplicate, but i can't seem to figure this out. I am wanting to submit a form in HTML to a Popup window. when i hit the submit button, it returns a blank page. I want the pop up to display all of the input that one filled out one the form. I want to do it in JavaScript. This is my code here. I want it to output all of the information entered in the form, from the Personal Information fieldset and the personal choices fieldset. I want it to display as an unordered list.
Heres the Javascript that i have so far:
<head>
<title>My Form</title>
<script type="text/javascript">
function display() {
dispWin = window.open('','NewWin',
'toolbar=no,status=no,width=300,height=200')
message = "<ul><li>First Name:" +
document.mdForm.first_name.value;
message += "<li>Last Name:" +
document.mdForm.the_lastname.value;
message += "<li>Address:" +
document.mdForm.the_address.value;
message += "</ul>";
dispWin.document.write(message);
}
</script>
Heres the HTML:
<body>
<h1>My Form</h1>
<form name="mdForm" method="post" action="">
<fieldset>
<legend>Personal Information</legend>
<p><label class="question" for="first_name">What is your First name?
</label>
<input type="text" id="first_name" name="first_name"
placeholder="Enter your First name."
size="50" required autofocus /></p>
<p><label class="question" for="the_lastname">What is your Last name?
</label>
<input type="text" id="the_lastname" name="the_lastname"
placeholder="Enter your Last name."
size="50" required /></p>
<p><label class="question" for="the_address">What is you address?
</label>
<input type="text" id="the_address" name="the_address"
placeholder="Enter your address."
size="50" required /></p>
<p><label class="question" for="the_email">What is your e-mail address?
</label>
<input type="email" id="the_email" name="the_email"
placeholder="Please use a real one!"
size="50" required /></p>
</fieldset>
<fieldset>
<legend>Personal Choices</legend>
<p><span class="question">Please check all your favorite foods:</span>
</br>
<input type="checkbox" id="food_one" name="some_statements[]"
value="Buffalo Wings" />
<label for="food_one">Buffalo Wings</label><br/>
<input type="checkbox" id="food_two" name="some_statements[]"
value="Enchiladas" />
<label for="food_two">Enchiladas</label><br/>
<input type="checkbox" id="food_three" name="some_statements[]"
value="Hamburgers" />
<label for="food_three">Hamburgers</label><br/>
<input type="checkbox" id="food_four" name="some_statements[]"
value="Spaghetti" />
<label for="food_four">Spaghetti</label></p>
<p><span class="question">Select your favorite online store:</span><br/>
<input type="radio" id="the_amazon" name="online_store"
value="amazon" />
<label for="the_amazon">Amazon</label><br/>
<input type="radio" id="bestbuy_electronics" name="online_store"
value="bestbuy" />
<label for="bestbuy_electronics">BestBuy</label><br/>
<input type="radio" id="frys_electronics" name="online_store"
value="frys" />
<label for="frys_electronics">Frys Electronics</label><br/>
</p>
<p><label for="my_band"><span class="question">Who's your favorite band/ artist?</span></label><br/>
<select id="my_band" name="my_band" size="4" multiple>
<option value="The Chi-Lites">The Chi-Lites</option>
<option value="Michael Buble">Michael Buble</option>
<option value="Frank Ocean">Frank Ocean</option>
<option value="Labrinth">Labrinth</option>
</select>
</p>
</fieldset>
<div id="buttons">
<input type="submit" value="Click Here to Submit" onclick="display();" />
or
<input type="reset" value="Erase and Start Over" />
</div>
</form>
</body>

Have you prevented the default submit functionality?
Try:
function display(e) {
//To stop the submit
e.preventDefault();
...
Do your Stuff
...
//Continue the submit
FORM.submit();
}

How to put a text limit in a form input box

I am looking to put a character limit on an input box on a form. I ideally want 140 characters but can't work out how to do it.
I'm using Angular on my front end.
My code for the input section i need a text limit for new.html
<div class="form-group">
<label>Description 140 characters</label>
<input type="text" ng-model="postsNew.post.description" class="form-control" </textarea>
I tried to use another textarea way but it deleted half of my form.
Here is my full code for this section
<section class="container">
<h1>What happened?</h1>
<form ng-submit="postsNew.submit()">
<div class="form-group">
<label>Tube Line</label>
<select ng-model="postsNew.post.line" class="form-control">
<option ng-repeat="line in postsNew.linesList" value="{{line}}">
{{line}}
</option>
</select>
</div>
**
<div class="form-group">
<label>Description 140 characters</label>
<input type="text" ng-model="postsNew.post.description"
class="form-control" </textarea>
</div>
**
<div class="form-group">
<label>Date</label><br>
<input id="enddatefield" type="date" ng-model="postsNew.post.date"
class="form-control">
</div>
<div class="form-group">
<label>Time</label><br>
<input type="time" name="name" ng-model="postsNew.post.time"
class="form-control">
</div>
<input type="submit" value="Fingers crossed..." class="btn btn-primary
pull-right">
</form>
</section>

With maxlength="int"
EXAMPLE:
<input type="text" name="text" maxlength="10">
Working DEMO.

You can use maxlength
<input type="text" name="max_length" maxlength="20">

<input type="text" ng-model="postsNew.post.description" class="form-control" maxlength="140" />

you can use this maxlength="140" attribute in your input field.

form validation in JS for checkboxes

I'm trying to do a homework assignment and having some issues. I'm supposed to validate a form with Javascript. Right now I'm trying to make sure that a user has checked at least one checkbox (out of four options) in order for the form to submit. (I've gotten other segments of validation to work, so the issue seems to be local to this part of code.)
This is what the html for the checkbox form looks like:
<fieldset>
<input type="checkbox" name="boxes" id="member" value="member" />
<label for="member">I'm a member.</label>
<p><input type="checkbox" name="boxes" id="newsletter" value="newsletter" />
<label for="newsletter">Please send me your monthly newsletter.</label></p>
<p><input type="checkbox" name="boxes" id="preshow" value="preshow" />
<label for="preshow">I'm interested in hearing about pre-show events.</label></p>
<p><input type="checkbox" name="boxes" id ="none" value="none" />
<label for="none">None of the above.</label></p>
And this is what I've written to try to validate it using Javascript:
function validateForm() {
var checkBoxes = document.getElementsByName("boxes");
for (var i=0; i < checkBoxes.length; i++) {
if (checkBoxes[i].checked === true) {
return true;
break;
} else {
alert("At least one checkbox must be selected.");
return false;
}
}
}
This isn't working; the form submits whether boxes have been checked or not.
I would really love to get some help here because I don't have any idea what I'm doing wrong. Like I said, the problem seems to exist somewhere in this specific code, because other validation in separate blocks of code does work.
This is the complete HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title> hw5 </title>
<link rel ="stylesheet" href="form.css"/>
<script src="form.js"></script>
<script src="states.js"></script>
<!--<script src="browser.js"></script>-->
</head>
<body>
<div>
<h1><b>Buy your tickets online</b></h1>
<form name="theForm" method="post" action="https://cs101.cs.uchicago.edu/~sterner/show-data.php" onsubmit="return validateForm(this)">
<section id="name-and-address">
<fieldset>
<h2 class="name">Full name</h2>
<label for="firstname">First name:</label> <input type="text" name ="firstname" id="firstname" autofocus="autofocus" />
<p><label for="lastname">Last name:</label> <input type="text" name ="lastname" id="lastname" /></p>
</fieldset>
<fieldset>
<h2 class="Billing Address">Billing Address</h2>
<label for="street">Street name and number:</label>
<input type="text" name ="street" id="street" />
<p><label for="city">City:</label>
<input type="text" name="city" id="city" /></p>
<p><label for="state">State:</label>
<select id="state" name="state">
</select></p>
<p><label for="zip">Zip code:</label>
<input type="text" name="zip" id="zip" /></p>
</fieldset>
</section>
<section>
<aside>
<fieldset>
<h2 class="payMethod">Method of Payment</h2>
<p class="row">
<input type="radio" id="pay-pal" name="payment" value="pay-pal" />
<label for="pay-pal">PayPal</label>
</p>
<p class="row">
<input type="radio" id="credit" name="payment" value="credit" />
<label for="credit">Credit Card</label>
</p>
</fieldset>
<fieldset>
<input type="checkbox" name="boxes" id="member" value="member" />
<label for="member">I'm a member.</label>
<p><input type="checkbox" name="boxes" id="newsletter" value="newsletter" />
<label for="newsletter">Please send me your monthly newsletter.</label></p>
<p><input type="checkbox" name="boxes" id="preshow" value="preshow" />
<label for="preshow">I'm interested in hearing about pre-show events.</label></p>
<p><input type="checkbox" name="boxes" id ="none" value="none" />
<label for="none">None of the above.</label></p>
</fieldset>
<fieldset>
<p><label for="email">Email address:</label>
<input type="email" name="email" id="email" /></p>
</fieldset>
</aside>
</section>
<section id="submit">
<fieldset>
<input type="submit" value="Buy my tickets."/>
</fieldset>
</section>
</div>
</body>
</html>

TinyBox how get passing value from parent pages

Recently I have faced a problem which do not know how to pass value from parent page to a tinybox. The following is my source code; is there any idea can help me to achieve this? A edit.php wrap inside a tinybox so when I click on a specific column suppose the value should pass to the edit.php (tinybox) and also the value will display on the textfield, but it just simply doesn't work. I am new in PHP would appreciate for some one pointing me to good solution.
parent page.php
display_cell6.appendChild(edit).innerHTML='<img id="edit" alt="Edit" class="'+obj[idx].id+'" onclick="TINY.box.show({iframe:\'ajaxEditUserDetail.php\',boxid:\'frameless\',width:400,height:280,openjs:function(){openJS(this.id)}}); title="Edit" src="images/edit.png"></img>';
function openJS(id){
var id=parent.document.getElementById(id);
alert(id);
}
edit.php
<div id="banner">
<span>Edit Customer Information</span>
</div>
<div id="form_container">
<fieldset>
<div class="box-form">
<form action="send.php" method="POST" id="userDetail" >
<fieldset>
<div>
<label for="name_Req">Name <strong>*</strong></label>
<input type="text" id="name_Req" name="name" value="test"
title="Required! Please enter your name" />
</div>
<div>
<label for="contact_Req_Email">E-mail <strong>*</strong></label>
<input type="text" id="contact_Req_Email" name="email"
title="Required! Please enter a valid email address" />
</div>
<div>
<label for="telephone_Tel">Telephone</label>
<input type="text" id="telephone_Tel" name="telephone"
title="Please enter a valid telephone number" />
</div>
<div>
<label for="address">Address</label>
<input type="text" id="address" name="address" title="Please enter a
valid address" />
</div>
<div>
<input type="submit" value="Save" id="sub" class="button" />
</div>
</fieldset>
</form>
</div>
</fieldset>
</div>