How to assign a quoted string to a variable in JavaScript

In JavaScript, we often need to assign a string to a variable for use in code. This article will introduce a method to assign a quoted string to a variable in JavaScript.

In javascript, we can use single quotes or double quotes to create strings. For example:

var str1 = '这是一个字符串';
var str2 = "这也是一个字符串";

These string variables can be used to store text, numbers, etc. However, if your string contains quotes, then you need to wrap it with a different type of quotes within the string. For example:

var str3 = "这个字符串中有一个单引号 '";
var str4 = '这个字符串中有一个双引号 " ';

However, if your string contains both single and double quotes, then you need to do special processing. The most common way is to use the escape character (\) to escape quotes in your string. For example:

var str5 = "这个字符串中有一个单引号 \' 和一个双引号 \" ";

In the above code, we use escape characters to escape single quotes and double quotes, and assign the entire string to the variable str5.

There is another way that makes it easier for us to assign a quoted string to a variable. This is using template literals.

Template literals are a JavaScript syntax that uses backticks (`) to wrap strings and provides a way to insert strings using variables or expressions. For example:

var name = 'John';
var age = 30;
var str6 = `我的名字是 ${name}，年龄是 ${age}岁。`;

In the above code, we use backticks to wrap the string and insert variables into it. Since we used ${} to insert variables, we don't need to worry about quotes in the string.

To summarize, if you need to assign a quoted string to a variable, you can use escape characters or template literals. Escaped characters require you to manually handle quotes in strings, while template literals allow you to construct strings more intuitively using variables or expressions.

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