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jquery overview, code examples and the latest version of the download

Source: Internet
Author: User
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jquery is a fast, compact JavaScript library with powerful features.

Its basic functions include:

1) Accessing and manipulating DOM elements

2) control page style (can be compatible with various browsers)

3) Handling of page events

4) The use of a large number of plugins in the page

5) The perfect combination of Ajax technology

jquery has changed the way many programmers use JavaScript.

jquery Official Homepage code example:

1) DOM Traversal and manipulation

Set the text content of the <button> of class continue to "Next Step ..."

1 $( "button.continue").html( "Next Step...")

2) Event handling

When you click on any button under the #button-container container, a hidden #banner-message button is displayed, which is hidden using CSS display:none.

1234 varhiddenBox = $( "#banner-message" );$( "#button-container button").on( "click", function( event ) {  hiddenBox.show();});

3) Ajax

Call the/api/getweather program on the server and pass the parameter as zipcode=97201, and the returned result is displayed in #weather-temp.

123456789 $.ajax({  url: "/api/getWeather",  data: {    zipcode: 97201  },  success: function( data ) {    $( "#weather-temp" ).html( "<strong>"+ data + "</strong> degrees");  }});

Some other examples are:

1) Building a jquery development environment

(1) Download in http://jquery.com.

(2) reference in the script tag:

1 <scriptlanguage="javascript" type="text/javascript"src="Jscript/jquery-1.7.1.js"></script>

2) Example of a simple pop-up window

1234567891011121314 <html><head>    <title>jQuery程序1</title>    <scriptlanguage="javascript"type="text/javascript"            src="jquery/jquery-1.7.1.js"></script>    <scripttype="text/javascript">           $(document).ready(function(){              alert("Hello,http://www.169it.com!!!");                    })    </script></head><body></body></html>

$ (document). Ready (function () {}) is the jquery code, equivalent to Window.onload, which can be simply written as $ (function () {})

3) jquery's chain-style notation

1234567 <script type="text/javascript">        $(function(){         $(".divTitle").click(function(){           $(this).addClass("divCurrColor").next(".divContent").css("display","block");         });        });   </script>

4) jquery Access DOM Object

JavaScript mode:

1234 var tDiv=document.getElementById( www.169it.com "divTmp" ); var oDiv=document.getElementById( "divOut" ); varcDiv=tDiv.innerHTML;oDiv.innerHTML=cDiv;

jquery Method:

1234 vartDiv=$("#divTmp");var oDiv=$("#divOut");varcDiv=tDiv.html();oDiv.html(cDiv);

5) dynamically toggle CSS style:

12345 $(function(){$(".divDefault").click(function(){$(this).toggleClass("divClick").html("点击后的样式");});});

jquery Homepage The latest version download:

Currently jquery includes 1.x series and 2.x series, as follows:

Jquery


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