代码示例:(标识:eg_js_string_quotes)
<!DOCTYPE html>
<html>
<body>

<h2>JavaScript 字符串</h2>

<p>字符串在引号中书写。您能够使用单引号或双引号:</p>

<p id="demo"></p>

<script>

var carName1 = "Porsche 911"; // 双引号
var carName2 = 'Porsche 911'; // 单引号

document.getElementById("demo").innerHTML =
carName1 + " " + carName2; 

</script>

</body>
</html>
运行结果: