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Detailed interpretation of the code, string concatenation in Javascript
Detailed interpretation of the code, string concatenation in Javascript
The following is the String connection in Javascript that I compiled for you. Interested students can take a look.
<pre name="code" class="javascript"><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
/*1．concat函数，将两个或者多个字符串连接成一个字符串
首先看一下concat的语法
variable.concat("string1","string2","string3","string4");
*/
var str1 = "aa"
var str2 = "bb"
var str3 = "cc"
var str = str1.concat(str2,str3);
alert(str);
//或
str = "";
str = str.concat(str1,str2,str3);
alert(str);
//或
str = "";
str = str.concat("aa","bb","cc");
alert(str);
/*2. 通过加号（+）直接对字符串进行连接
*/
str = str1+str2+str3;
alert(str);
//或 声明一个变量来进行连接
str = "";
str += "hello";
str += "world";
document.write(str);
/*3. 将字符串存入数组，然后调用join方法．
将数组中的每个元素连接起来返回一个字符串.参数就是连接符.(默认连接符是",")
使用该方法可以模拟一个StringBuilder
*/
var sArr = ["long"," time"," no"," see"];
alert(sArr.join(""));
</script>
</head>
<body>
</body>
</html>The above is the string connection in Javascript that I compiled for everyone. I hope it will be helpful to everyone in the future.
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