Extjs array usage

/** * Extjs array usage */ (Function (){
Ext. onready (function (){
// 1 VaR myarray = [1, 2, 3, 4,-3,-4]; Ext. array. Every (myarray, function (item ){ If (item> 0 ){ Return true; } Else { // Alert (item ); Return false; } }, This );
// 2 VaR newarray = ext. array. Filter (myarray, function (item ){ If (item> 0 ){ Return true; } Else { Return false; } }, This ); // Alert (newarray. Join ("\ n "));
// 3 Object. Prototype. Get = function (Key, defv ){ If (this [Key]) { Return this [Key]; } Else { If (defv ){ Return defv; } } } VaR person = { Name: 'uscat ', Age: 26 } // Alert (person ['age']); // Alert (person. Get ('name '))
});
// 4 concatenating two or three Arrays VaR alpha = ["A", "B", "C"]; VaR numeric = [1, 2, 3]; VaR num3 = [7, 8, 9]; VaR alnum = Alpha. Concat (numeric );
// Alert (alnum)
VaR alnu3 = Alpha. Concat (numeric, num3 ); // Alert (alnu3 );
// 5 concatenating values to an array
VaR Alphas = ['A', 'B', 'C'];
VaR alnumeric = Alphas. Concat (1, [2, 3]); // Alert (alnumeric );
// 6 use a string to connect all elements in an array VaR A = new array ("wind", "Rain", "fire "); VaR myvar1 = A. Join (); // Alert (myvar1 ); VaR myvar2 = A. Join (","); // Alert (myvar2 ); VaR myvar3 = A. Join ("+ "); // Alert (myvar3 );
// 7 the pop method removes the last element from an array and returns that // Value to the caller. VaR myfish = ["angel", "Clown", "Mandarin", "surgeon"];
VaR popped = myfish. Pop (); // Alert (popped); // return result surgeon
// 8 adds one or more elements to the end of an array and returns the new // Length of the array.
VaR sports = ["soccer", "Baseball"]; VaR arrlen = sports. Push ("football", "playing Ming ") // Alert (arrlen); // return length 4
// 9 reverse the array element (inverted order) VaR myarray = ["one", "two", "three"]; Myarray. Reverse (); // Alert (myarray); // result three, two, one
// 10 remove the first element from an array and return the removed Element
VaR myfishs = ["angel", "Clown", "Mandarin", "surgeon"];
// Console. Log ("before:" + myfishs );
VaR shifted = myfishs. Shift (); // Console. Log ("after:" + myfishs );
// Console. Log ("the removed element:" + shifted );
// Sorting of array elements (from small to large) /* * Function comparenumbers (a, B) {return A-B; */
VAR numbers = [4, 2, 5, 3, 6, 0]; Numbers. Sort (function (a, B ){ Return A-B; }); // Console. Log (numbers );
// 12 array to string (returns a string representing the array and its elements. // Overrides the object. Prototype. tostring method .) VaR monthnames = new array ("Jan", "FEB", "Mar", "APR "); Monthnames. tostring (); // Console. Log (monthnames );
// 13 adds one or more elements to the front of an array and returns the new // Length of the array. VaR myfishh = ["angel", "Clown"]; Console. Log ("before:" + myfishh ); VaR unshiftedd = myfishh. unshift ("drum", "lion "); Console. Log ("after:" + myfishh ); Console. Log ("New length of array:" + unshiftedd );
})();