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JavaScript > Code Examples

5 Function Calculator

5 Function Calculator

<HEAD>
<title>Happy Codings :-) JavaScript Code Examples</title>

<SCRIPT LANGUAGE="JavaScript">

<!-- Begin
function a_plus_b(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=a+b
form.ans.value = c
}
function a_minus_b(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=a-b
form.ans.value=c
}
function a_times_b(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=a*b
form.ans.value=c
}
function a_div_b(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=a/b
form.ans.value = c
}
function a_pow_b(form) {
a=eval(form.a.value)
b=eval(form.b.value)
c=Math.pow(a, b)
form.ans.value = c
}
// End -->
</SCRIPT>

<BODY>
<CENTER>
<FORM name="formx"><input type=text size=4 value=12 name="a"> 
<input type="button" value="  +  " onClick="a_plus_b(this.form)">  
<input type="button" value="  -  " onClick="a_minus_b(this.form)">  
<input type="button" value="  x  " onClick="a_times_b(this.form)">  
<input type="button" value="  /  " onClick="a_div_b(this.form)">  
<input type="button" value="  ^  " onClick="a_pow_b(this.form)">  
<input type="number" size=4 value=3 name="b"> = <input type "number" value=0 name="ans" size=9>
</FORM>
</CENTER>

<p><center>
<font face="arial, helvetica" size="8">Happy Codings :-) JavaScript Code Examples<br>
by <a href="http://javascript.happycodings.com/">JavaScript Code Examples</a></font>
</center><p>

Find the Length of Strings without strlen() - We are Counting the Number of characters in a given String to find out & display its Length on console. Upon 'execution' of this program, the user would be asked to enter string, then

If Else Check Given Integer is Odd or Even - The if...else statement executes some code if the test expression is true (nonzero) & some other code if the test expression is false (0). If test expression is true, codes inside the body

C++ Program to Implement Pairing Heap - In this, Insert item x into the 'priority queue', maintaining heap order. Return a pointer to the node containing the new item. Find the 'smallest' item in the priority queue. Return

Programs to Traverse the Tree Recursively - C Coding, using recursion, performs traversal operation across the nodes in a tree. The tree we have used is the "Binary Search Tree". The user "Generates a Tree" by inserting integers.

Sorting Elements in Lexicographical Order - C Language program code 'Sort Elements' in lexicographical order (dictionary order). This program takes 10 words(10 strings) from the user and sorts them in lexicographical order.

C++ Coding Sorts a Data using Heap Sort - Heap sort is comparison based algorithm. It's selection sort sample. The time complexity is O(n*log(n)). Build a max heap using the given data element. And then Delete the root node

C Language Finding the Sum of G.P Series - C Language program is used to Find the Sum of the geometric progression series. Here G.P stands for geometric progression. Geometric progression, or GP, is a sequence where each

Converts Hexadecimal to Octal in The C++ - Program ask to the user to enter any number in Hexadecimal to convert it into octal, then display the result on the screen: Here first we will convert the entered hexadecimal number