Dojo Learning notes 4. Dojo.string & Dojo.lang

Module: dojo.string.common/dojo.string

Dojo.string.common and dojo.string are the same, as long as one of require can use the following methods

Dojo.string.trim

Remove whitespace from a string

Usage Example:

s = "abc";d Ojo.string.trim (s);　would return "ABC" Dojo.string.trim (S, 0);　would return "ABC" Dojo.string.trim (S, 1);　would return "ABC" Dojo.string.trim (S,-1); would return "ABC"

Dojo.string.trimStart

Remove whitespace from the beginning of a string

Usage Example:
s = " abc ";dojo.string.trimStart(s);　//will return "abc "
dojo.string.trimEnd

Remove whitespace from end of string

Usage Example:
s = " abc ";dojo.string.trimEnd(s);　//will return " abc"
dojo.string.repeat

Generate a string that is duplicated by the same character (string)

Usage Example:
dojo.string.repeat("a", 4);　//will return "aaaa"dojo.string.repeat("1234", 3, "-");　//will return "1234-1234-1234"
dojo.string.pad

Filling strings with characters

Usage Example:
dojo.string.pad("100", 6);　//will return "000100"dojo.string.pad("100", 6, "0", 1);　//will return "000100"dojo.string.pad("100", 6, "0", -1);　//will return "100000"
dojo.string.padLeft

Start with character completion string

Usage Example:
dojo.string.padLeft("100", 6);　//will return "000100"
dojo.string.padRight

Use character completion string end

Usage Example:

Dojo.string.padRight ("100", 6); Would return "100000"

Module: Dojo.lang.common/dojo.lang

Dojo.lang.common and Dojo.lang are the same, as long as one of require can use the following methods

Dojo.lang.mixin

Adds an object's methods and properties to another object

Usage Example:

var S1 = {Name: "Testobj", Test1:function () {alert ("This is test1!");} var s2 = {value:1000, test2:function () {alert ("This is test2!");}　var d = {};d ojo.lang.mixin (d, S1, S2); After implementation D has all the properties and methods of S1 and S2 d.test1 ();

Dojo.lang.extend

Extends methods and properties for the specified class's prototype

Usage Example:

TestClass = function () {};d Ojo.lang.extend (TestClass, {name: "Demo", Test:function () {alert ("test!");});　var o = new TestClass (); TestClass There was no test method, but extend later there was a test method o.test ();

Dojo.lang.find=dojo.lang.indexof

Finds the position of the specified object in the specified array

Usage Example:
var arr = [1,2,3,3,2,1];dojo.lang.find(arr, 2);　//will return 1dojo.lang.find(arr, 2, true);　//will return 1dojo.lang.find(arr, "2", true);　//will return -1dojo.lang.find(arr, "2", false);　//will return 1dojo.lang.find(arr, 2, true, true);　//will return 4
dojo.lang.findLast=dojo.lang.lastIndexOf

Finds the position of the specified object in the specified array, looking forward from the back

Usage Example:
var arr = [1,2,3,3,2,1];dojo.lang.findLast(arr, 2);　//will return 4dojo.lang.findLast(arr, 2, true);　//will return 4dojo.lang.findLast(arr, "2", true);　//will return -1dojo.lang.findLast(arr, "2", false);　//will return 4
dojo.lang.inArray

Finds whether the specified object is in the specified array

Usage Example:
var arr = [1,2,3];dojo.lang.inArray(arr, 1);　//will return truedojo.lang.inArray(arr, 4);　//will return false
dojo.lang.isObject

Determines whether the type entered is an object

Usage Example:
dojo.lang.isObject(new String());　//will return truedojo.lang.isObject("123"));　//will return false
dojo.lang.isArray