October 24th, 2013, 09:24 AM
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Find square root by prompt in javascript
I am new to this Javascript
I want to design a webpapge using javascript which would find the square root of number using prompt dialog box from user.
I had written code as below but cannot get number through prompt.
How to get number through prompt function in java script
<script>
function myFunction()
{
var x;
var x=prompt("Enter number for square root","enter number");
if (x!=null)
{
x="Square root of " + x;
document.getElementById("demo").innerHTML=Math.sqrt(x);
}
}
</script>
Thanks a lot in advance
October 24th, 2013, 10:56 AM
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x="Square root of " + x;
document.getElementById("demo").innerHTML=Math.sqrt(x);
Didn't you see you have written text into X before getting sqrt of it? obviously this will fail...