PHP here document is another way of displaying text. A here document is just some text inserted directly in a PHP page.
echo <<< Token
Where Token is word that begins and ends the here document.
Ex-
Declaring Variable Rule
A variable declared without a value will have the value undefined
Keyword or Reserved words
| var | delete | for | let | brack |
| super | void | case | do | static |
| function | new | switch | while | interface |
| catch | else | if | package | finally |
| this | with | class | enum | default |
| implements | private | throw | tiled | typeof |
| const | export | import | protected | return |
| true | continue | extends | in | |
| instanceof | ||||
| public | try | debugger | false |
In JavaScript, we do not need to specify the type of the variable because it is dynamically used by the JavaScript engine.
We can use var data type. It can hold any type of data like String, Number, Boolean, etc.
Primitive Data Type Non-Primitive Data type
String Object
Number Array
Boolean RegExp
Undefine
CSS border-property:- The css property sets the rounded borders and provides the rounded corners around an element, tag, or div. It defines the radius of the corners of an element.
It is shorthand for border top-left-radius, border-top-right, border-bottom- right-radius and border-bottom-left-radius. It gives the rounded shape to the corners of the border of an element. We can specify the border for all four corners of the box in a single declaration using the border-radius. The values of this property can be defined in percentage or length units.If the bottom-left value is omitted, then it will be same as the top-right. If the value of bottom-right is eliminated, then it will be same as the top-left. Similarly, if top-right is eliminated, then it will be the same as top-left.
Let’s see what happens when we provide a single value, two values, three values, and four values to this property.
example:-
Border-radius for specific corners:-
It sets the border radius for the top-left corner.
Example:- border-top-right-radius
It sets the border-radius for the top-right corner.
Example- border-bottom-right-radius
It sets the border-radius for the bottom-right corner.
Example- border-bottom-left-radius
It sets the border-radius for the bottom-left corner.
We can specify seprate horizontal and vertical values by using the slash(/) symbol. The values before the slash (/) is used for the horizontal radius and the values after the slash(/) are for the vertical radius.
There is an example given below using the slash(/) symbol.
Example:-
This statement is used to output the data to the screen or printing text on
screen.
Ex: –
This is very similar to echo statement a way of displaying text.
Ex-
CSS Border:-
The CSS border is a property is used to set the border on an element.
The CSS border properties are use to specify the style, color and size of the border of an element. The CSS border properties are given below
1.CSS border-style:- The Border style property is used to specify the border type which you want to display on the web page.
There are some border style values which are commenly used for boder-style property. Try it yourself:-
2. CSS border-width:- This property is used to set the border’s width. It is set in pixels. we can also use the one of the three pre-defined values, thin, medium or thick to set the width of the border. Example:-
3. CSS border-colour:- This property is used to set the border color. There are methods to set the color of the border.
There is also a border color named “transparent”. If the border color is not set it is inherited from the color property of the element.
HTML 5 enables to create more interactive websites by embedding audio, video and graphics on the web page.
The purpose of HTML5 is primarily to make it easier for web developers.
New features:
and more………….
<!DOCTYPE html>
<html>
<head>
<title> Hello </title>
</head>
<body>
<h1> Body of Page </h1>
</body>
</html>
<!DOCTYPE html>
It is an instruction to the web browser about what version of HTML the page is written in.
The <!DOCTYPE> declaration is not case sensitive.
CSS Selector:-
CSS selector are used to select those content which we want to style. CSS selector is used to select HTML elements according to its id, class, type, attribute etc.
Types of CSS selector:-
CSS Comments:- CSS comments are generally written to explain your code. It is very helpful fir the users who reads your code so that they can easily understand the code. Comments are ignored by the browsers. Comments are the single line or multiple line statements and written in /*……..*/ .
CSS Background:- This property is used to define the backgroud effects on elements. There are 5 CSS background properties that affect the HTML elements.
You can set the background color like this:
2.CSS background-image:- The background-image property is used to set an image as a background of an element. By default the image covers the entire element. Example:-
3. CSS background-repeat:- BY default,
the background-image property repeats the background image horizontally and vertically. Some images are repeated only horizontally or vertically.
The background looks better if the image repeated horizontally only.
4. CSS background-attachment:- Thisproperty is used to specify if the background image is fixed or scroll with the rest of the page in browser window. If you set fixed the background image then the image will not move during scrolling in the browser. example:-
5.CSS background-position:- The background-position property is used to define the initial position of the background image. By default, the background image is placed on the top-left of the webpage. we can set the following positions:-
HTML 4.01 Strict
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01//EN” “http://www.w3.org/TR/html4/strict.dtd”>
HTML 4.01 Transitional
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “http://www.w3.org/TR/html4/loose.dtd”>
HTML 4.01 Frameset
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Frameset//EN” “http://www.w3.org/TR/html4/frameset.dtd”>
<html>
<head>
<title> Hello </title>
</head>
<body>
<h1> Body of Page </h1>
</body>
</html>
Everything inside this element is shown inside the main browser window. <body> is opening body tag and </body> is closing tag.
<html>
<head>
<title> Hello </title>
</head>
<body>
<h1> Body of Page </h1>
</body>
</html>