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xin song1,929 Points
Without parseFloat, why it's still calculating.
var num1 = prompt("Give 1st number: ");
var ps1= parseFloat( num1 );
var num2 = prompt("Give 2nd number: ");
var ps2 = parseFloat( num2 );
document.write( num1 + " + " + num2 + " = " + (ps1 + ps2) + "<br>");
//==================Why ( num1 * num2 ) still getting calculated here?===
document.write( num1 + " * " + num2 + " = " + ( num1 * num2 ) + "<br>");
document.write( num1 + " / " + num2 + " = " + ( ps1 / ps2 ) + "<br>");
document.write( num1 + " - " + num2 + " = " + ( ps1 - ps2 ) );