JavaScript processing in jquery User Manual (5)

$. Browser () function. I hope it is not called incorrectly. The purpose is to determine the browser type and return the boolen value.

$ (Function (){
If ($. browser. MSIE)
{
Alert ("this is an Internet Explorer ");}
Else if ($. browser. Opera ){

Alert ("This Is An operabrowser ");}
})

When the page load determines the browser type, you can determine the types of MSIE, Mozilla, opera, and Safari browsers.

$. Each (OBJ,
FN)
OBJ is an object or array, and FN is a function executed in sequence on OBJ. Note that $ (). Each () is distinguished ()

$. Each ([0, 1, 2], function (I) {alert ("item
# "+ I +": "+ This );});

Input 0, 1, 2 as parameters to function (I) respectively.

$. Each ({name: "John", Lang: "JS"
}, Function (I) {alert ("name:" + I + ", value:" + this );

{
Name: "John", Lang: "JS"} is a hash object. Each group of hash objects is input to the function in sequence.

$. Extend (OBJ,
Prop)
Extend the first object with the 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)
Use the FN function to filter the array. Pass the elements in the array to FN in sequence. The FN must return a boolen. If FN returns true, it will be filtered.

$ (Function (){
VaR arr = $. grep (
[0, 1, 2, 3], function (I) {return I> 2 ;});
$. Each (ARR,
Function (I) {alert (I );
});
})

We can see that the array [, 4] After $. grep is executed becomes [].

$. Merge (first,
Second)
Both parameters are arrays. The second array is the same as the first one, and then the two arrays are merged.

$ (Function (){
VaR arr = $. Merge (
[0, 1, 2], [2, 3, 4])
$. Each (ARR, function (I) {alert (I );
});
})

The result of ARR is [0, 1, 2, 3, 4].

$. Trim (STR)
Removes spaces at both ends of a string.

$. Trim ("Hello, how are you?
")

The result is "Hello, how are you? "