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JavaScript 加法运算符
tryjsref_oper_string3
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<!DOCTYPE html> <html> <body> <h1>JavaScript Operators</h1> <h2>The + (Addition) Operator</h2> <p>The + operator concatenates (adds) strings:</p> <p id="demo"></p> <script> let text1 = "Good"; let text2 = "Morning"; let text3 = text1 + " " + text2; document.getElementById("demo").innerHTML = text3; </script> </body> </html>