")
a=a+1
document.write("The value of a is "+a+".
")
a+=1;
document.write("The value of a is "+a+".
")
a++
document.write("The value of a is "+a+".
")
++a
document.write("The value of a is "+a+".
")>
document.write("The value of a is "+(a++)+".
")
document.write("The value of a is "+(++a)+".
")