Seven things you need to know about beginners JavaScript

1.1. Thumbnail mark

//Defining Objects//var car = new Object (); //car.colour = ' red '; //car.wheels = 4; //car.hubcaps = ' spinning '; //car.age = 4; //the simple wording of the above code:            varCar ={colour:'Red', Wheels:4, Hubcaps:'Spinning', Age:4            }//Defining Arrays            varTestarr =NewArray ('str1','str2','STR3','STR4'); //the simple wording of the above code:            varTestarr = ['str1','str2','STR3','STR4']; //Associative Arrays            varCar =NewArray (); car['Colour'] ='Red'; car['Wheels'] =4; car['hubcaps'] ='Spinning'; car[' Age'] =4;
Triple Marker method
var direction;
if (x<200) {direction=1;} Else{direction=-1}
The triple notation can be written as
var direction=x<200?1:-1;

1.2. JSON data format

JSON is the abbreviation for JavaScript Object notion

       Description band        var band = {                "name": "The Red hot Chili Peppers",                "members": [                    {                        "name": "Zhangsan",                        " Role ":" Lead vocals "                    }, {                        " name ":" Lisi ",                        " role ":" Bass guitar,trumpet,backing vocals "                    }                ], "Year                ": "The"            }

Json-p cross-domain application: http://www.cnblogs.com/chopper/archive/2012/03/24/2403945.html

Seven things you need to know about beginners JavaScript