HTML Tutorial Topic 4

HTML Tutorial Topic 4

html forms

Welcome Again all,
Today I am Going To Start New Topic
Very Very Important as a Web Developer
For HTML which covers Forms.
Let’s Start...

Topics

  1. Form Elements select and Text Area
  2. Input Elements
  3. Input Elements Attributes
Form elements are such element which we used for creating our HTML form like Some Elements input box,dropdown select,Buttons,Textarea.
Input Box – For Simple input of data in any format.
Select Dropdown – For Selecting Item in a list of items
textarea – For Large Area of Input Contents ,Description Message which is  used to display our data in also multiline.
Button – For Submit our Form or Simple Button For Any Events.

List of Form Elements.

  1. <form>
  2. <select>
  3. <input>
  4. <textarea>
  5. <button>
  6. <option>
  7. <datalist>
  8. <optgroup>
  9. <button> 


<!DOCTYPE html>
<html>
<head>
<title>Form Elements</title>
</head>
<body>
Input Box <input type="text" name="text">
<br>
    DropDown Select <select name="text">
     <option>First</option>
     <option>Second</option>
       </select>
    <br>
    Text Area<textarea cols="50" rows="5">I m a text area</textarea>
<br>   
    Button <button type="button" name="button">Button</button>

</body>
</html>

Result : 



html form

Simple Login Form Example

<!DOCTYPE html>
<html>
<head>
<title>Form Elements</title>
</head>
<body>
<form action="login.php" method="post">
Email<br> <input type="email" name="email" placeholder="Email">
<br>
    Password <br> <input type="password" name="Password" placeholder="Password">
    <br>
 <button type="submit" name="button">Login</button>
    </form>

</body>
</html>

Result

html login form

Explaination
From line <form> - Here is form beginning form elements pass all data to new page on submitting. Form elements pass only that data which is child element of form.
E.g <form>child Elements</form>
method= method is default get but we can use get or post.
When we use get our data pass through url which we see in url and post 
pass data hidden.
action = action is our url for submitting data on that page like any server side page where it catch that data.( which we see in php tutorial) for now we just pass and server side language catch it.

Other line after that are data elements which contain in its its variable and variable name is name=”value” this value is the variable name which we catch in server side.

Submit = button submit is used to submit our its very important for submitting our forms.




  

Here is a list of Input Types Elements like radio,checkbox,button,date,select

select element and properties
select has a list of child  elements which values we defined inside option element when we submit the form the selected values pass through the form
<option>First</option>   and <option value=”1”>First</option> 
Here you two types of option i declare both is same but if we dont defined (set value=”value”) then option text value will be passed else value attribute value pass.

We can also make default selection of any element by using attribute
selected=”selected”
in option element

We can set the size of select box  like display more than one value at a time  by using.
size=”n” where n= no. Of elements to display 

We can also make multiple selection this time the value will pass in array format.
By using multiple=”multiple” but for using mutiple we have to change name  in array for like my variable name is : -

name=”vegeable”
then i have to change it to

name=”vegetable[]”
if we don’t do that then we only get single selected value only

Simple All Select Example

<!DOCTYPE html>
<html>
<head>
 <title>HTML Select</title>
</head>
<body>
 <form action="http://localhost/form.php"> 
        <select name="fruit">
  <option>Apple</option><option>Mango</option><option>Orange</option>
                    </select><br>
         <select name="animal" size="4">
  <option>Cat</option><option>Dog</option><option>Elephant</option><option>Horse</option><option>Zebra</option>
        </select><br>
        <select name="vegetable[]" size="4" multiple="multiple">
  <option>Potato</option><option>Onion</option><option>Cabbage</option><option>Pea</option><option>Carrot</option>
        </select><br>
        <select name="defaultselected">
  <option>Potato</option><option>Onion</option><option selected="selected">Cabbage</option><option>Pea</option>  <option>Carrot</option>
         </select><br>
         <select name="differntvalue">
  <option value="1">First</option><option value="2">Second</option><option value="3">Third</option><option value="4">Fourth</option>
     <option value="5">Fifth</option>
         </select><br>
         <button type="submit" name="submit">Submit</button> 
   </form>

</body>
</html>

Result

form select

PHP Output

php request
 I Know You all Excited To Check This Form Data After Seeing Output So Jst Use this.
Note : -Make Sure You Install Xampp Or Local Server 


Code : 

<?php
echo "<pre>";
print_r($_REQUEST);
echo "</pre>";

Textarea

Text area  is a large area for writing contents like post,message it is multi line input area.
We can change its no. Of line to occcupied by using attribute
rows=”n” n= no. Of rows
We can change its no. Of column to occupied by using attribute
cols=”n” n= no. Of cols
E.g : <textarea rows=”5” cols=”5”>I am textarea</textarea>

Input Elements

Input Elements is a huge list of types that why am covering this on last topic.
It contain datalist like auto complete data.
It contain checkbox,Radio button
It also contain 3 types of buttons also button,submit,reset
button – Normal Button
submit – Form Submit Button
reset – Reset The Form Data

List Of Types of all Inputs (type=”value” attrribute) 

type=”text” for text input
type=”password” for password hidden values
type=”submit” for submit values in forms
type=”reset” for reseting values in form inputs
type=”radio” for radio button option
type=”checkbox” for multi check boxes (used name in array like name=”language[]”)
type=”color” for color picker
type=”date” for date selecting using calendar
type=”email” for email input
type=”number” for number input
type=”time” for time input 

Input Elements Example

<!DOCTYPE html>
<html>
<head>
<title>Input Elements</title>
</head>
<body>
<form action="http://localhost/form.php" method="post">
Plain Text Box <input type="text" name="name"><br>
Password Field <input type="password" name="password"><br>
Radio Button (Gender E.g): 
<label>Male <input type="radio" name="gender" value="male"><label>Female <input type="radio" name="gender" value="female"></label><br>
CheckBox (Language E.g) :
<label>C++ <input type="checkbox" name="lang[]" value="c++"></label><label>PHP <input type="checkbox" name="lang[]" value="php"></label><br>
Color <input type="color" name="color"><br>
Date (E.g DoB) <input type="date" name="dob" ><br>
Email <input type="email" name="email"><br>
Number (E.g Age) : <input type="number" name="age"><br>
Time <input type="time" name="time" ><br>
<input type="submit" name="submit" value="submit"><input type="reset" name="reset" value="Reset Form Fields">
</form>
</body>
</html>

Result 
html input

html input color

html input date

Result Output in PHP

php request

 Input Attributes

Now We See Different Types Of Inputs Now lets see its Extra Attributes.
value=”value” which set values in input fields.
readonly=”readonly” which only reads values we can’t edit it.
disabled=”disabled”
disabled the input element then it will be not pass data to server.
maxlength=”n” n= length of input field
required=”required” used for validation without filling that field user can’t submit form.
autofocus=”autofocus” which directly focus that field when page loads.
placeholder=”transparent hint values” for display transparent hint values
I added a blog more about how to handle form data in server side using PHP
Check My Blog : -


Link :  PHP REQUEST and GET

 
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