String Operators +=
RUN
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> </head> <body> <h1>Học lập trình miễn phí tại freetuts.net</h1> <p id="quest"></p> <p id="result"></p> <button onclick="myFunction()">Run</button> <script> var string1= "Freetuts.net "; var string2= "is a blog"; var string3 = ""; document.getElementById("quest").innerHTML = 'string1 = "Freetuts.net " <br> string2 = "is a blog" <br> string3 = ""'; function myFunction() { string1 += string1 + string2; content = 'string1 += string2 => string1 = ' + string1 + '<br>'; document.getElementById("result").innerHTML = content; } </script> </body> </html>
PHÓNG TO