​x
 
<!DOCTYPE html>
<html>
<body>
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<h2>JavaScript 字符串</h2>
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<p>字符串在引号中书写。您能够使用单引号或双引号：</p>
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<p id="demo"></p>
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<script>
​
var carName1 = "Porsche 911"; // 双引号
var carName2 = 'Porsche 911'; // 单引号
​
document.getElementById("demo").innerHTML =
carName1 + " " + carName2; 
​
</script>
​
</body>
</html>
​