W3School TIY Editor
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<!DOCTYPE html> <html> <body> <p>删除注释（在行的开头）以测试每种情况：</p> <p id="demo"></p> <script> var x; //x = (0 == ""); // true //x = (1 == "1"); // true //x = (1 == true); // true //x = (0 === ""); // false //x = (1 === "1"); // false //x = (1 === true); // false document.getElementById("demo").innerHTML = x; </script> </body> </html>