JavaScript handling of the jquery user manual

$.browser () function, I hope I have not called the wrong. The purpose is: To determine the browser type, return Boolen value

$ (function () {

if ($.browser.msie) {

Alert ("This is an IE browser");}

else if ($.browser.opera) {

Alert ("This is an opera browser");}

})

When page loading determines browser type, there are several types of browsers that can be judged by MSIE, Mozilla, Opera, Safari

$.each (obj, fn) http://www.mlybyby.com

Obj is an object or an array, and FN is the function executed sequentially on OBJ, noting the distinction of $ (). each ()

$.each ([0,1,2], function (i) {alert ("Item #" + i + ":" + This);});

The 0,1,2 is passed into function (i), respectively, as a parameter.

$.each ({name: "John", Lang: "JS"}, function (i) {alert ("Name:" + i + ", Value:" + this);

{Name: "John", Lang: "JS"} is a hash object, in turn, each group of objects in the hash is passed into the function

$.extend (obj, prop)

Extend the first object with a second object

var settings = {validate:false, limit:5, Name: "foo"};

var options = {validate:true, name: "Bar"};

$.extend (settings, options);

After execution, the settings object is {validate:true, limit:5, Name: "Bar"}

You can use the following function to test

$ (function () {

var settings = {validate:false, limit:5, Name: "foo"};

var options = {validate:true, name: "Bar"};

$.extend (settings, options);

$.each (settings, function (i) {alert (i + "=" + This);});

})

$.grep (ARRAY,FN)

By using the function FN to filter the array, passing the elements in the array to FN,FN must return a boolen, such as FN returns True, will be filtered

$ (function () {

var arr= $.grep ([0,1,2,3,4], function (i) {return i > 2;});

$.each (arr, function (i) {alert (i);});

})

We can look at the execution $.grep after the array [0,1,2,3,4] becomes [0,1]

$.merge (first, second)

The two parameters are arrays, the second array is the same as the first one, then the two numbers are combined and

$ (function () {

var arr = $.merge ([0,1,2], [2,3,4])

$.each (arr, function (i) {alert (i);});

})

You can see that the result of ARR is [0,1,2,3,4]

$.trim (str)

Remove spaces at both ends of a string

$.trim ("Hello, how is You?")

The result is "Hello, how is it?"

JavaScript handling of the jquery user manual