一周学会Mootools 1.4中文教程:(4)类型

alert(typeOf(???));

//from 把传入的参数转为字符串,如:
String.from(2);//returns '2'
String.from(true);//returns 'true'

//uniqueID 产生一个独一无二的ID
alert(String.uniqueID())

//trim 清除字符串两端的空白字符串
alert(' i like cookies '.trim())

//toInt 将字符串转为数字,并以给出的基准进制进行转换
alert('4em'.toInt());//returns 4
'10px'.toInt();//returns 10

//toFloat 将字符串转为浮点数
alert('95.25%'.toFloat());//returns 95.25
'10.848'.toFloat();//returns 10.848

//toLowerCase/toUpperCase大小写转换
alert('AA'.toLowerCase())

//test 使用正则表达式对字符串进行匹配测试
alert('I like cookies'.test('COOKIE','i'));忽略大小写检查字符串内是否包含指定的子字符串

//escapeRegExp 将字符串中对正则表达式敏感的字符进行转义
alert('animals.sheep[1]'.escapeRegExp());//returns 'animals.sheep[1]'

//substitute 类似模板中的标签替换
var my1='{a}|{b}|{b_2}.';
var my2 ={a:'这是标签a,',b:'这是标签b',b_2:'这个呢?'};
my1.substitute(my2);

//from 把传入的参数转为Number
alert(Number.from('12')); //returns 12
Number.from('hello') //returns null

//random 返回一个随机数
Number.random(5,20);//returns a random number between 5 and 20.

//round 四舍五入
(12.45).round() //returns 12
(12.45).round(1) //returns 12.5
(12.45).round(-1) //returns 10

//toInt 将数字转为数字,并以给出的基准进制进行转换
(111).toInt();//returns 111
(111.1).toInt();//returns 111
(111).toInt(2);//returns 7

//toFloat 将数字转为浮点数
(111).toFloat();//returns 111
(111.1).toFloat();//returns 111.1

//常用数学方法
/* abs
acos
asin
atan2
ceil
cos
exp
floor
log
max
min
pow
sin
sqrt
tan
*/
(-1).abs();//returns 1
(3).pow(4);//returns 81

//常见的Array格式
var arr=[1,2,3,4];
var arr=new Array(1,2,3,4);

//Array.each 循环遍历数组
var arr=['Sun','Mon','Tue'];
Array.each(arr,function(day,index){
　　alert('name:'+day+',index:'+index);
});

//every 如果数组中的每一项都通过了给定函数的测试,则返回true
var arr=[10,4,25,100];
var areAllBigEnough=arr.every(function(item,index){
　　return item > 20;
});

//clean 在现有数组的基础上建立一个新数组,每一个成员必须是已经定义过的,IE浏览器则必须是非null和非undefined的
var myArray=[null,1,0,true,false,'foo',undefined,''];
myArray.clean() //returns [1,0,true,false,'foo',''];//false也是合法的,因为他也是已经定义过的

//indexOf 返回数组中和给出参数值相等的项的索引号;如果未找到相等的项,则返回-1
['apple','lemon','banana'].indexOf('lemon');//returns 1
['apple','lemon'].indexOf('banana');//returns -1

//map 调用外部函数循环处理现有数组内的每个项目,并产生新数组
var timesTwo=[1,2,3].map(function(item,index){
　　return item * 2;
});//timesTwo=[2,4,6];

//some 如果数组中至少有一个项通过了给出的函数的测试,则返回true
var isAnyBigEnough=[10,4,25,100].some(function(item,index){
　　return item > 20;
});//isAnyBigEnough=true

//flatten 把多维数组转换为一维数组
var myArray=[1,2,3,[4,5,[6,7]],[[[8]]]];
var newArray=myArray.flatten();//newArray is [1,2,3,4,5,6,7,8]

//empty 清空数组
var myArray=['old','data'];
myArray.empty();//myArray is now []

//erase 从数组内移除一个项目
['Cow','Pig','Dog','Cat','Dog'].erase('Dog') //returns ['Cow','Pig','Cat']
['Cow','Pig','Dog'].erase('Cat') //returns ['Cow','Pig','Dog']

//getRandom 从数组内随机提取键值
['Cow','Pig','Dog','Cat'].getRandom();//returns one of the items

//append 合并数组,新数组追加到末尾
var myOtherArray=['green','yellow'];
['red','blue'].append(myOtherArray);//returns ['red','blue','green','yellow'];
myOtheArray;//is now ['red','blue','green','yellow'];
[0,1,2].append([3,[4]]);//[0,1,2,3,[4]]

//contains 测试指定项是否在数组中存在
['a','b','c'].contains('a');//returns true
['a','b','c'].contains('d');//returns false

//常见的Object格式
var O={a:0,b:1};

//each 遍历
var O={first:'Sunday',second:'Monday',third:'Tuesday'};
Object.each(O,function(value,key){
　　alert('The '+key+' day of the week is '+value);
});

//merge 合并一组Obj生成新Obj
var obj1 ={a:0,b:1};
var obj2 ={c:2,d:3};
var obj3 ={a:4,d:5};
var merged=Object.merge(obj1,obj2,obj3);//returns{a:4,b:1,c:2,d:5},(obj2,and obj3 are unaltered)
merged === obj1;//true,obj1 gets altered and returned as merged object
var nestedObj1 ={a:{b:1,c:1}};
var nestedObj2 ={a:{b:2}};
var nested=Object.merge(nestedObj1,nestedObj2);//returns:{a:{b:2,c:1}}

//append 合并Obj,追加到尾部
var firstObj ={
name:'John',
lastName:'Doe'
};
var secondObj ={
age:'20',
sex:'male',
lastName:'Dorian'
};
Object.append(firstObj,secondObj);
//firstObj is now:{name:'John',lastName:'Dorian',age:'20',sex:'male'};

//subset 从Obj内获取子集
var object ={
a:'one',
b:'two',
c:'three'
};
Object.subset(object,['a','c']);//returns{a:'one',c:'three'}

//map 调用外部函数循环处理现有Obj内的每个项目,并产生新Obj
var myObject ={a:1,b:2,c:3};
var timesTwo=Object.map(myObject,function(value,key){
return value * 2;
});//timesTwo now holds an object containing:{a:2,b:4,c:6};

//keys 返回Obj内所有的key成为一个数组
var myObject ={e:10,b:4,c:25,d:100};
var keys=Object.keys(myObject);
alert(keys)

//values 返回Obj内所有的value成为一个数组
var myObject ={e:10,b:4,c:25,d:100};
var keys=Object.values(myObject);
alert(keys)

//getLength 返回Obj的元素个数
var myObject ={
name:'John',
lastName:'Doe'
});
Object.getLength(myObject);//returns 2

//keyOf 根据value查询Obj内的key的名称;如果未找到相等的项,则返回false
var myObject ={a:'one',b:'two',c:3};
Object.keyOf(myObject,'two');//returns 'b'
Object.keyOf(myObject,3);//returns 'c'
Object.keyOf(myObject,'four');//returns false

//contains 测试Obj内是否存在某个值
var myObject ={a:'one',b:'two',c:'three'};
Object.contains(myObject,'one');//returns true
Object.contains(myObject,'four');//returns false

//toQueryString 把Obj内的项目转换为Url地址,然后URIencode
Object.toQueryString({apple:'red',lemon:'yellow'});//returns 'apple=red&lemon=yellow'
Object.toQueryString({apple:'红色',lemon:'yellow'});//apple=%E7%BA%A2%E8%89%B2&lemon=yellow
Object.toQueryString({apple:'red',lemon:'yellow'},'fruits');//returns 'fruits[apple]=red&fruits[lemon]=yellow'

//常见的Json格式
var J={"_5":"停","_4":"Wi","_3":"