How to incorporate a boolean value in a string in JavaScript

Question

Suppose I want to incorporate a boolean value in some string I print out, like

var x=1;
var y=2;
document.write("<p>The result is "+x==y+"</p>");

Normally, this does not give me the requred output. Is there a method to directly print boolean expressions in the document.write() itself? I do not want to use if-else and then assign separate values to variables and then print them. PS - I have just started learning JavaScript.

• VisioN: Do you want to output true or false?

Answer 1

Put parentheses around the boolean expression:

document.write("<p>The result is " + (x == y) + "</p>");

If you don't, you're doing this:

document.write(("<p>The result is " + x) == (y + "</p>"));

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And in general, don't use document.write.

• nsane: What do I use then? I'm relatively new to JavaScript and so far the tutorials at W3Schools have used document.write. Are there any loopholes with it?
• Dave Newton: @nisargshah95 First advice would be to avoid W3Schools unless you already know what you're doing. Second, if you're just learning JavaScript, use the console--you don't need to write any HTML.
• Dave Newton: @nisargshah95 The JavaScript console, available by default in Chrome, and maybe Firefox as well, if it isn't, install Firebug. Or use node.js.

Answer 2

This evaluates to a string:

(x==y).toString();

So you can use:

"<p>The result is " + (x==y).toString() + "</p>"

Answer 3

var x=1;
var y=2;
document.write("<p>The result is "+(x==y)+"</p>");

Will do

The result is false