2.4.javascript字符串型

<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>字符串类型</title>
</head>
<body>
<script type="text/javascript">
//<![DATA[
/*字符串连接
-----------------------------------
var str = "Hello ";
str += "World" + "<br/>";
str += "I like Javascript";
document.write( str );
-----------------------------------
*/



/*字符串转义字符
-----------------------------------
var str = "Hello World\n\tI like \nJavascript ";
document.write( "<h1 style=\"font-family:Times;\">" + str + "</h1>" );
document.write( '<h1 style="font-family:Times;">' + str + '</h1>' );
-----------------------------------
*/

/*字符串属性方法
-----------------------------------

-----------------------------------
*/
var str = "Hello";//字面量
var strObj = new String("Hello");
var strObjRef = strObj;

//alert(str == strObj);
/*
if(str.constructor == String && strObj.constructor == String ){
document.write("字符串类型");
}
*/
document.write( str.length );

//]]>
</script>
</body>
</html>



原文地址:https://www.cnblogs.com/xiaozhanga4/p/2396066.html