JQuery anchor jump to the scroll bar to smoothly scroll one sentence code
Copy the code as follows: $ ("html, body"). animate ({scrollTop: $ ("# box"). offset (). top}, 1000 );
Here are some tips for jquery.
1. Control compilation results
Copy the code as follows:
<Script type = "text/javascript tutorial" src = "scripts/jquery-1.2.6.min.js"> </script>
<% If (false) {%>
<Script type = "text/javascript" src = "scripts/jquery-1.3.2-vsdoc2.js"> </script>
<% }%>
2.
1. If you want to use the functions provided by jQuery, you must first construct the jQuery packaging set.
Convert Dom elements into jQuery packaging sets
Copy the code as follows:
Var div = document. getElementById ("testDiv"); // Dom element
Var domToJQueryObject =$ (div); // jQuery packaging
3. Convert jQuery package set to Dom object
Copy the code as follows:
Var domObject = $ ("# testDiv") [0]; // Get the DOM object
$ ("# TestDiv"). each (function () {comment (this).html ("modify content")}) // Convert to jQuery package set operation
4.
Copy the code as follows:
JQuery (callback)
Returns: jQuery
$ (Document). ready ()
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Learning jQuery from scratch (3) managing jQuery packaging sets
Copy the code as follows:
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "content-type" content = "text/html; charset = utf-8">
<Title> Hello World jQuery! </Title>
<Script type = "text/javascript" src = "scripts/jquery-1.3.2-vsdoc2.js"> </script>
</Head>
<Body>
<Hr/>
<Input id = "btnShow" type = "button" value = "---- filter"/>
<Input id = "btnHide" type = "button" value = "hide ---- filter"/>
<! -- ============================== Begin js ============ ============================================= -->
<Script type = "text/javascript">
$ (
Function (){
$ ("# BtnShow"). bind ("click", function (event) {$ (". filter"). show ();});
$ ("# BtnHide"). bind ("click", function (event) {$ (". filter"). hide (500 );});
}
);
// $ ("# BtnChange"). bind ("click", function (event) {$ ("# divMsg" ).html ("Hello World, too! ");});
</Script>
<Script type = "text/javascript">
// $ ("<Div/>" ).css tutorial ("border", "solid 1px # FF0000" ).html ("dynamically created div "). appendTo (testDiv); // OK
// $ ("<Div style =" border: solid 1px # FF0000 "> dynamically created div </div>") // not done
$ (
Function ()
{
// Alert ("loaded! "); // Executed after loading is complete
}
);
// Alert ("LODING... "); // Execute
</Script>
<! -- ============================ End js ========== ============================================= -->
<Script type = "text/javascript">
// Template
</Script>
<! -- Table template -->
<Table>
<Tr>
<Td> </td>
</Tr>
</Table>
<Script type = "text/javascript">
Function first () {// first
Var an_element = $ ("div"). eq (0 );
// Obtain the entire Div of the First div. If an_element is directly output, it is displayed as an object.
Alert(an_element.html (); // output
}
Function second (){
Var second_e = $ ("div"). filter (". test2"); // The result is an occasional match.
/* = ===================================== */
// Second_e.each (
// Function (){
// This.html ("modify it! ")
//}
//);
/* ===================================================== ============= */
Alert(second_e.html (); // The test result shows only the content of the First div.
Alert(second_e.eq(1).html (); // Obtain the second
}
// ================================================ ========================================================== ===
</Script>
<Div class = "filter" onclick = "first ()">
Example 1: click I run
<Table>
<Tr>
<Td>
Obtain the nth element by using eq (index).
</Td>
<Td>
Obtain the second matching element:
$ ("P"). eq (1)
</Td>
</Tr>
</Table>
</Div>
<Hr/>
<Div class = "second" onclick = "second ()">
<Div class = "test2"> filter the element set that matches the specified expression. The first div </div>
<P> 2nd examples: click I run </p>
<Span> filter (expr) </span>
<Div class = "test2">
Keep the element with test2 class: here it is with test2 class
$ ("X"). filter (". test2") 2nd div
</Div>
</Div>
<Hr/>
<Div class = "test3" onclick = "third ()">
<Script type = "text/javascript">
Function third (){
// Alert ("");
Var test3 = $ ("p"). filter (// same level
Function (index) {// Traverse
// Alert (index );
// Alert ($ ("ol", this#.html ());
// Alert ("index:" Upload index#((this#.html (); // this is the content of each traversal object in each P tag.
// Is there no content in the p tag of <p> <ol> <li> include ol </li> </ol> </P>?
// The content of <p> p <ol> <li> contains ol </li> </ol> </p> contents (this).html () = p
Alert ("th" + index + "p =>" second digit (this).html () + "ol =>" + $ ("ol", this).html ());
// It may be a version Issue. I introduced * jQuery JavaScript Library v1.3.2-.
// All content is empty
Return $ ("ol", this). length = 0; // 1 multi-condition filtering 2 return false then this element is deleted
}
);
Alert(test3.html ());
}
</Script>
Filter (fn ):
Filters out a set of elements that match the specified function return value.
This function will calculate each object once (as in '$. each'). If the called function returns false, this element will be deleted, otherwise it will be retained.
<P> p html <ol> ol html <li> li </li> </ol> 2 </p>
<P> How are you? Does not contain </p>
</Div>
<Div class = "test4">
<Script type = "application/javascript">
</Script>
</Div>
</Body>
</Html>
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