js_basics_4.html

<script>
	"use strict";
	//array
	//create
	
	var anArray = new Array();
	var anotherArray = Array();
	var yetAnotherArray = [];
	
	//alert(typeof anArray + typeof anotherArray + typeof yetAnotherArray);	
	//var anArray = new Array('12','qwqw');
	//anArray.length = 5;
	//alert(anArray);
	
	var anArray1 = new Array('12');
	var anArray1 = new Array(12);
	//alert(typeof anArray1);
	
	var anotherArray = Array(11,'12','qwqw');	
	//alert(typeof anotherArray.toString());
	
	//alert();
	anotherArray[30] = 'I am at postion 30';
	//console.log(anotherArray + "\n"+ anotherArray.length);
	
	anotherArray['assoc'] = 'I am assoc';
	anotherArray[3.14] = 'I am 3.14';
	//alert(anotherArray + "\n"+ anotherArray.length);
	
	//alert(anotherArray['assoc']);
	//alert(anotherArray.assoc);
	//alert(anotherArray[3.14]);
	//alert(anotherArray.3.14);
	//alert(anotherArray.3.14);
	/*
	console.log(anotherArray);
	
	var yetAnotherArray = [];	
	//alert(typeof anArray + typeof anotherArray + typeof yetAnotherArray);
	
	var anObject = new Object();
	anObject['aAssoc'] = 'aAssoc';
	anObject.aAssoc = 'aAssoc2';
	anObject[12] = 12;
	//anObject.12 = 123;//invalid: error
	anObject['12'] = '13';
	//anObject.'145' = '145'; //invalid: error
	//anObject.'aaa' = 'aaa'; ////invalid: error
	
	//anObject.aAssoc = new Object();
	anObject.aAssoc.a = 'aAssoc a';
	
	console.log(anObject.aAssoc.a);
	
	
	var anObject = new Array();
	anObject['aAssoc'] = 'aAssoc'; //valid:property
	anObject.aAssoc = 'aAssoc2'; //reassing
	anObject[12] = 12; //valid: in position 12
	//anObject.12 = 123;//invalid: error
	anObject['12'] = '13';
	//anObject.'145' = '145'; //invalid: error
	//anObject.'aaa' = 'aaa'; ////invalid: error	
	
	anObject.aAssoc = 'aAssoc a';
	
	//anObject.length = 0;
	
	console.log( anObject.toSource() );
	*/
	
	var yetAnotherArray = ['12','13abc',['12','13abc'],'we'];
	var yetAnotherArray = Array('12','13abc','we');
	yetAnotherArray[2] = Array('12','13abc');
	console.log(yetAnotherArray);
	
	//
	var sum = 0;
	function add(){
		//return 0;
		sum = arguments[0] + arguments[1];
		alert(sum +"w/ param");
	}
	
	function add(a,b){
		//return 0;
		//return arguments[0] + arguments[1];
		sum = a + b;
		alert(sum +"-param");
	}
	
	add();
	
</script>