Processing example of array string numeric objects in jQuery Ajax

Jquery's tool functions encapsulate the processing methods of commonly used strings, numbers, arrays, and objects. Below are some of the commonly used methods:

String operation

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Var str = 'www.111cn.net '; Console. log (str); // www.111cn.net Console. log ($. trim (str); // www.111cn.net, remove spaces $. Each view the data information of arrays and objects cyclically Var arr = ['It blog', 'php blog', 'javacsrip', 'net blog']; $. Each (arr, function (index, value ){ Console. log (index + '---' + value ); });

Output result: (the object method is the same as the array method)

0---IT Blog
1 --- php blog
2 --- Java SDK blog
3 --- net blog

$. Grep filtering information

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Var arr = [, 34]; Var arr1 = $. grep (arr, function (element, index) {// element => array value size, index => index starts from 0... Return index <3; }); Console. log (arr1); // [4, 6, 3]

$. Map returns the modified data

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Var arr = [, 34]; Var arr1 = $. map (arr, function (element, index) {// element => array value size, index => index starts from 0... If (element> 5 & index <7 ){ Return element + 2;     } }); Console. log (arr1); // [8, 90, 58, 80, 47]

$. InArray: determines whether an element returns a subscript in an array.

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Var arr = [, 34]; Console. log ($. inArray (88, arr); // 3: Find the subscript of an element in the array

$. Merge arrays

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Console. log ($. merge ([3, 5, 7], [5, 4, 2]); // [3, 5, 7, 5, 4, 2]: merge arrays

Test function:

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Console. log ($. isArray ([1, 2]); // true indicates whether an array is used. Console. log ($. isFunction (function aa () {}); // true determines whether the function is a function. Console. log ($. isEmptyObject ({}); // true determines whether an object is empty. Console. log ($. isPlainObject ({}); // true indicates whether the object is a pure object. Console. log ($. isPlainObject ({'name': 'A'}); // true determines whether the object is a pure object. Console. log ($. type (222); // number indicates the data type. Console. log ($. type ('20140901'); // string determines the data type Console. log ($. isNumeric (432); // true is not a number Console. log ($. isNumeric ('20140901'); // true is not a number Console. log ($. isWindow (window); // true indicates whether the window object is used. Console. log ($. contains ($ ('# box '). get (0), $ ('# pox '). get (0); // true, whether the box contains pox or not

$. Browser detection

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Console. log ($. browser. webkit); // You can check whether Google Chrome is used. Console. log ($. browser. mozilla); // You can check whether the Firefox browser is used. Console. log ($. browser. mise); // determines whether the browser is an IE browser. Console. log ($. browser. version); // judge the browser version