![]() ![]() Example const str 'true' const boolValue str 'true' console.log(boolValue) console. This method is case-sensitive and only works for these exact string representations. And it is easy to convert string into boolean. Method 1: Using the operator You can compare the string with a specific boolean value as a string, such as ‘true’ or ‘false’. ![]() Then we want to throw in trim () to strip whitespace. !! !!valueĬonst finalThoughts = "I really enjoyed writing this article. The easiest way to convert string to boolean is to compare the string with 'true': let myBool (myString 'true') For a more case insensitive approach, try: let myBool (myString.toLowerCase() 'true') However, toLowerCase () will throw an error if myString is null or undefined. parseJSON ('true') Read Also How to convert a string to boolean in JavaScript Solution 3: Another way is to normalize data by using. There are two methods to cast a value to a boolean in JavaScript. Below is an example of the correct use of this function. Example 1 In the following example, we convert a string (let stringvar True) to Boolean using comparison and ternary operator. The toString () method requires its this value to be a Boolean primitive or wrapper object. stringvar It could be any string that you want to convert into the boolean. For Boolean values, the toString method returns a string representation of the boolean value, which is either 'true' or 'false'. You shouldn't use this with the new keyword ( new Boolean) as this creates an instance of a Boolean that has a type of object. The Boolean object overrides the toString method of Object it does not inherit (). JavaScript Truthy and Falsy Values Cheatsheet Boolean(false) // falseīoolean( // true The Boolean() Function Boolean(value)īoolean() is a global function that converts the value it's passed into a boolean. This article provides an overview of truthy and falsy values and how to convert values into booleans in JavaScript. let boolString 'true' let boolValue (boolString 'true') console. If the string contains the value ‘true’, then it gives us boolean value true else it gives false. In this case, we simply check whether the string contains true or not. ![]() It can only take the values true or false. Boolean Values Very often, in programming, you will need a data type that can only have one of two values, like YES / NO ON / OFF TRUE / FALSE For this, JavaScript has a Boolean data type. If both values are the same, it will return the boolean value true, otherwise, it will return the boolean value false. Use test () Method to Convert String to Boolean Javascript The test () method of Javascript will match a regular expression against a given string. A JavaScript Boolean represents one of two values: true or false. There are implicit and explicit methods to convert values into their boolean counterparts. In this case, you want to convert a string to a boolean, which means you'll compare it to the string 'true'. In Boolean contexts, JavaScript utilizes type casting to convert values to true/false. A boolean is a primitive value that represents either true or false. ![]()
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