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CSS Introduction
Learn to master the necessary front-end CSS styles, css as Cascading Style Sheets, used to define the page display, to enhance the user experience fun, how to use html css in it?
style attribute way
Using the style attribute tag changes the display style
p tags Author:
Adding style tags in the head author:
p{color:#FFF000;}
Link mode
CSS summary
Select the name {
Property name: property value;
…….
}
Separated by semicolons properties with the property
Attributes and attribute values are connected by a colon
Selector
1.class selector
2.id selector
.class# id
Html
html Hypertext Markup Language, tag defined by the language, the code is not case sensitive.
Head tag
: Specifies the content in the browser title bar shows. : Description of the page.
Commonly used in labels:
Fonts
Title Tag:
……
List
Name Name Tom Tom
image
Image tags: Image Map:
form
Table tags:
Header cell| Row |
|---|
Table header name, age dashucoding10
Hyperlink
Hyperlinks positioning mark
Forms
Text box text
Password box password
Radio button radio
Checkbox checkbox
Submit button submit
Reset button reset
Button button
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JavaScript Introduction
JavaScript is an object-based and event-driven scripting language, providing information for the dynamic interaction html, high security, cross-platform and strong. JS is based on the object, and a weakly typed.
web front-end development learning Qqun: 767273102, way to share learning and the need to pay attention to small details, constantly updated with the latest tutorials and learning methods (detailed front-end project combat instructional video)
Introduction:
The script JavaScript code embedded into HTML documents
document.write ( "Welcome to the JavaScript world!");
functionclickme () {alert ( "click!");
Location of script code
Placed between markers
Placed between markers
variable
Variable names begin with a letter or an underscore ( "_")
May comprise a variable number, from case letters A to Z
JavaScript is case sensitive
Statements and variable assignments
Definition of variables: var name;
Assignment: name = dashucoding;
constant
1. Integer
2. Float
3. String
4. Data Type
The weak type, case sensitive
Numeric
Integer, float
String
Single or double quotes
Boolean
true, false
Null、undefined
Operators
Arithmetic Operators
+、-、 * 、 / 、%、++、–
Comparison Operators
==、!=、>、>=、<、<=
Logical Operators
&&、||、！
Conditional operator
？：
function
function function name (parameter ...) {execute the statement; return return value;}
Array
vararr =newArray();
for(var x=0; x<arr.length; x++){
alert(arr[x]);}
loop statement
1.for statement
2.while statement
3.for ... in statement
4. Interrupt loop
for (initialization; condition; increment) {statement;}
while (condition) {statement;}
for (variable in object) {statement;}