OOQ

#JavaScript #eval() eval() eval() is a function that recognizes a string as code. Grammar eval( string ) for example eval( '2+2' ) is the computed result 4, not the string 2+2. example

#JavaScript #avaScript / Functions / encodeURI(), encodeURIComponent(), decodeURI(), decodeURIComponent() encodeURI(), encodeURIComponent(), decodeURI(), decodeURIComponent() encodeURI() : A function that encodes without :, ;, /, =, ?, &, etc. used in internet addresses. encodeURIComponent() : a function that encodes all characters. decodeURI() : A function that decodes a string encoded with enc..

#javascript #Global Variables #Local Variables global and local variables Variables can be divided into Global Variables and Local Variables according to their scope. A global variable is a variable declared outside a function and accessible throughout the program. A local variable is a variable declared within a function that is created when the function is executed and destroyed when the funct..

#php #php grammar Put PHP code in HTML document Put your PHP code in an HTML document. To do this, you have to tell it which parts are PHP code. There are several ways to specify the PHP code part, but usually [Method 1] is used. Method 1 Put your PHP code between . Method 2 Put your PHP code between the script tags. others You can also use the following form when setting on the server, i.e. in ..

#JavaScript #Declare and call javascript/function/function declare a function 1. function functionName( argument1, argument2, ... ) { // Do Something } 2. var functionName = function( argument1, argument2, ... ) { // Do Something }; call a function functionName( value1, value2, ... ); If you declare a function with Method 1, the function call can be made before the function declaration or after ..

#jquery #:odd :odd :odd is a selector that selects odd-indexed elements. grammar $( ':odd' ) for example $( 'p:odd' ) Select p elements that are odd indices. One thing to note is that the indices start at zero. example 0. Lorem 1. Ipsum 2. Dolor 3. Sit Selects li elements with odd indices and replaces the text color with red.

#jQuery #:nth-child() :nth-child() :nth-child() is a selector that selects the an+bth sibling element. grammar $( ':nth-child(an+b)' ) a and b are constants, n is a variable. Non-negative integers (0, 1, 2, 3, ...) are assigned to n in sequence. You can use even, odd instead of an+b. example $( 'ol li:nth-child(2)' ) Selects the second element from the sibling elements of li, which is a child el..

#jquery #:has() :has() :has() is a selector to use when selecting elements that contain a particular element. grammar $( ':has(selector)' ) for example $( 'p:has(span)' ) Select the p element that has a span element. example jQuery Selector - :has() Lorem Ipsum Dolor Sit Amet Select the li element that has the a element as a child element to create a red border.

#jQuery #jQuery selector :even :even :even is a selector that selects even indexed elements. grammar $( ':even' ) for example $( 'p:even' ) Select an even index paragraph. Note that the first element index starts at 0. example 0. Lorem 1. Ipsum 2. Dolor 3. Sit Select even indexed li elements and color them red.

#css #css Descendant Selector A child selector selects elements that are children of a particular element. For example, the following selects blockqoute elements that are children of a div element. div blockquote At this time, even if there are more elements between div and blockquote, they will be selected. In other words, choose blockquote also when ... Choose blockquote also when: ...