![]() If both operands are the same, these operators return true. The comparison and identity operators compare the operands present on their left-hand and right-hand sides.It returns true if a match is found and false otherwise. The test() method uses regular expressions to match the text in a string.The switch-case statement allows us to convert different types of string values to boolean values.The Boolean wrapper class and the double NOT operator are not recommended to convert strings to boolean values.If a boolean value is stored in a string, JavaScript provides multiple methods through which we can convert that string into a boolean value.This is why we should avoid using this operator while converting strings to boolean values. Also, when we tried to convert both "true" and "false" strings to boolean, in both cases, the !! operator converted these strings to true. In any other case, this method will return false.įrom the above example, we can see that when we tried to convert an empty string ( '') to a boolean, the !! operator converted that string to false. If the given string contains "true", the test() method will return true. In order to convert a string to a boolean using the test() method, we simply need to match a regular expression object containing true with the given string. The test() method is a method of the RegExp object. This method returns true if a match is found and false otherwise. The test() method in JavaScript uses regular expressions to match the given string. "true" or "false", while a boolean value is written without quotes, i.e. Note: In the following sections, a string value (containing true or false) is written within quotes, i.e. Convert String to Boolean in JavaScriptįollowing are the different ways in which we can convert strings to boolean values in JavaScript. In this article, we will learn about these methods. There are various in-built functions that help convert strings to boolean in Javascript. If we wish to perform boolean operations on these values, these strings need to be converted into boolean values. It usually happens when we take string input from users or when we read files. ![]() In programming, sometimes boolean values ( true and false) are stored as strings ( "true" and "false"). To do so, we have nine different ways in which we can convert string to boolean in JavaScript. It all depends on which string values you want to consider as True and which string values you want to consider as False.There are times when we have a string that contains "true" or "false" and we need to convert these strings to boolean (or bool) in Javascript. Note that the above example is a very specific use case. ![]() We get True as the output for the string “true”. # string to boolean functionĮlif s in ("False", "FALSE", "false", "0"): We get True for the string having the value “True” and False for the string having the value “False”.Īlternatively, if you want a more exhaustive match for a string containing truth values like “True”, “1”, “TRUE”, “true”, etc. If you want to convert a string containing truth values such as “True” or “False” to boolean, you can use the equality operator to compare them with “True” and “False” and return a boolean value. Convert string truth values to boolean in Python We get True as the output for both the strings. So even if you pass truth values in string form, for example, “True” or “False”, you’ll get the same result. Note that the result from the bool() function depends on whether the passed string is empty or not. Let’s look at another example, this time with an empty string. We get True as the output because the string s above is non-empty. Let’s look at some examples of using the above function. It returns True for non-empty string and False for empty strings. The following is the syntax – # string to boolean Pass the string as an argument to the function. You can use the built-in bool() function to convert a string to a boolean in Python. How to convert string to a boolean in Python? In this tutorial, we will look at how to convert a string to a boolean in Python with the help of some examples.
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