js Getting Started Chapter 1

<script src="kaishixuexi.js"></script> This is a catchy way

 

 

<script >

var a="big tree";

var b=11;

var c=5;

var d="girlfriend";

var e="green";

// alert("I am a "+a+", which grows a "+b+" branch. I have a "+d+", and in autumn it will be "+e+"")

document.write("I am a "+a+", which grows a "+b+" branch. I have a "+d+", and in autumn it will be "+e+"")

</script>

 

 

Addition, subtraction, multiplication and division algorithms

<script>

var a=9;

var b=4;

document.write("a:"+(a+b)+"<br>");

document.write(+(a-b)+"<br>");

document.write("a*b"+(a*b)+"<br>")

document.write("a/b="+(a/b)+"<br>");

document.write("a+b-b*b/b="+(a+b-b*b/b)+"")

document.write("a+b="+(a+b)+"");

</script>