what innerHTML is doing in javascript

Question

Can anyone tell me what innerHTML is doing in javascript and give me example how I can use it

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The innerHTML property is part of the Document Object Model  DOM  that allows Javascript code to manipulate a website being displayed  Specifically  it allows reading and replacing everything within a given DOM element  HTML tag    However  DOM manipulations using innerHTML are slower and more failure-prone than manipulations based on individual DOM objects

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innerHTML explanation with example   The innerHTML manipulates the HTML content of an element get or set   In the example below if you click on the Change Content link it s value will be updated by using innerHTML property of anchor link Change Content  Example    x000D   x000D   lt a id  example  onclick  testFunction    gt Change Content lt  a gt  x000D   x000D   lt script gt  x000D    function testFunction    x000D         change the content using innerHTML x000D      document getElementById  example   innerHTML    This is dummy content   x000D   x000D         get the content using innerHTML x000D      alert document getElementById  example   innerHTML  x000D   x000D      x000D   lt  script gt  x000D       x000D   x000D   x000D

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You can collect or set the content of a selected tag   As a Pseudo idea  its similar to having many boxes within a room and imply the idea  everything within that box

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For understanding innerHTML property you first need to go through the basics of the javascript object and HTML DOM Document object model   I will try to explain    JavaScript objects consist of properties and methods  for rendering HTML document web browser creates a DOM  in DOM every HTML element is treated as a JavaScript Object which has a set of properties and methods associated with it    Now coming to your Question   HTML code    lt p id   myPara  gt  We love to Code  lt  p gt    JavaScript code   alert document getElementById  myPara   innerHTML     here  document getElementById  myPara   will return our html element as a javascript object which has pre-defined property innerHTML  innerHTML property contains the content of HTML tag   Hope this will help   You can run following HTML code in your browser to understand it    lt html gt   lt body gt     lt p id   myPara  gt  We love to Code  lt  p gt     lt script gt      alert document getElementById  myPara   innerHTML      lt  script gt   lt  body gt   lt  html gt

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Each HTML element has an innerHTML property that defines both the HTML code and the text that occurs between that element s opening and closing tag  By changing an element s innerHTML after some user interaction  you can make much more interactive pages   However  using innerHTML requires some preparation if you want to be able to use it easily and reliably  First  you must give the element you wish to change an id  With that id in place you will be able to use the getElementById function  which works on all browsers

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innerHTML is a property of every element  It tells you what is between the starting and ending tags of the element  and it also let you sets the content of the element     property describes an aspect of an object  It is something an object has as opposed to something an object does      lt p id  myParagraph  gt  This is my paragraph   lt  p gt      You can select the paragraph and then change the value of it s innerHTML with the following command     document getElementById  myParagraph   innerHTML    This is my paragraph

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The innerHTML fetches content depending on the id name and replaces them    x000D   x000D   lt  DOCTYPE html gt  x000D   lt html gt  x000D   lt head gt  x000D    lt title gt Learn JavaScript lt  title gt  x000D   lt  head gt  x000D   lt body gt  x000D   lt button type    button  x000D  onclick  document getElementById  demo   innerHTML   Date    gt   lt  --fetches the content with id demo and changes the innerHTML content to Date  -- gt  x000D  Click for date x000D   lt  button gt  x000D   lt h3 id    demo  gt Before Button is clicked this content will be Displayed the inner content of h3 tag with id demo and once you click the button this will be replaced by the Date    which prints the current date and time  lt  h3 gt   x000D   x000D   lt  body gt  x000D   lt  html gt  x000D   x000D   x000D    When you click the button the content in h3 will be replaced by innerHTML assignent i e Date

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It represents the textual contents of a given HTML tag   Can also contain tags of its own

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Each HTML element has an innerHTML property that defines both the HTML code and the text that occurs between that element s opening and closing tag  By changing an element s innerHTML after some user interaction  you can make much more interactive pages   However  using innerHTML requires some preparation if you want to be able to use it easily and reliably  First  you must give the element you wish to change an id  With that id in place you will be able to use the getElementById function  which works on all browsers   After you have that set up you can now manipulate the text of an element  To start off  let s try changing the text inside a bold tag  JavaScript Code    lt script type  text javascript  gt  function changeText        document getElementById  boldStuff   innerHTML    Fred Flinstone      lt  script gt   lt p gt Welcome to the site  lt b id  boldStuff  gt dude lt  b gt   lt  p gt    lt input type  button  onclick  changeText    value  Change Text   gt    This answer is from here

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The innerHTML property is used to get or set the HTML content of an element node   Example  http   jsfiddle net mQMVc           get the element with the  someElement  id  and give it new content document getElementById  someElement   innerHTML     lt p gt new content lt  p gt             retrieve the content from an element var content   document getElementById  someElement   innerHTML   alert  content

[javascript] what innerHTML is doing in javascript?

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