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<!DOCTYPE html> <html> <head> <title>Demo</title> </head> <body> <h1>Add and Assign</h1> <script> function Addassignvalue() { var a = document.getElementById("txtA").value; var result = 5; result += parseInt(a); // result = result + parseInt(a); alert(result); } </script> Enter digit : <input type="text" id="txtA" name="txtA" /> <input type="button" name="btnAddassignvalue" value="Add & Assign value" onclick="Addassignvalue()" /> </body> </html>
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