iterating over array

If there is such an array. arr = [12,34,45,46,36,58,36,59], which is now traversing the array.Method 1: We might have done this before: for (var i=0;i) {console.log (Arr[i]+ "\ n")}Method 2: Since ES5 was released, we can use the built-in foreach

1, what is the method of accessing an element or object in an array?  OBJECTATINDEX2, the syntax for accessing elements in an array of sugars? Array Object [subscript]3, how to access value in a dictionary? ObjectForKey4, dictionary access is worth

Indexed arrayThe first definition of an array$arr = Array (+/-);Var_dump ($arr);The second definition of an array$arr = [n/a];Var_dump ($arr);The third definition of an array$arr [0] = 7;$arr [1] = "Hello";Var_dump ($arr);echo $arr

2014-12-17 16:22:15.838 Precious Metals trends [4638:150754] * * * terminating app due to uncaught exception ' nsgenericexception ', Reason: ' * * * Collection was mutated while being enumerated. 'When the program appears, it is because you walk

Format:For (data type variable name: Array or collection) {SOP (variable);} Public Static void function_1 () { //for the object array traversal, can I invoke the method of the object string[] str = {"abc", "Itcast", "CN" };

1. The concept of arrays An array is a named range that is used to store a series of variable values. Each array element has an associated index (also a keyword) that can be used to access elements. PHP allows you to use numbers or strings evenly

7.0 for-of: Traversing complex data types 7.0.1 es5--for-in traversing arraysUsed primarily to traverse JSON objectslet arr = [‘a‘,‘b‘,‘c‘,‘d‘];for(let i in arr){ console.log(arr[i]);}//注释：for（创建一个变量）；in（in要遍历的复杂数据类型）7.0.2 es6--for-of遍历数组：let arr

1. Merging Arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.

1. Merging arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.

1. Merging arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.