string method to convert string to number javascript

String Method to Convert String to Number in JavaScript

When working with data in JavaScript, it's often necessary to convert strings into numbers or vice versa. There are several methods that can be used to achieve this conversion, each with its own advantages and disadvantages.

One approach is to use the fact that JavaScript tries to assimilate the data-types used in a statement such as addition or multiplication. This method is arguably the fastest one: `let str = '100';`. However, it's not advised to use this method since it may make your code less readable.

Another workaround is to use unary operators with concatenating an empty string. This method has better performance but lacks readability. For example: `+str`.

When parsing floats, both `Math.floor` and `Math.ceil` are probably not good options since they'll always convert the strings to the nearest integer equivalent. Instead, you can use `parseFloat(str)` or `parseInt(str)`.

`Math.ceil(str)` will return the nearest integer rounded up, while `Math.floor(str)` will return the nearest integer rounded down. `parseFloat(str)` and `parseInt(str)` can be used to convert a string to a number.

In addition to these methods, you can also use unary operators or multiply the string by the primitive number 1 to convert it to a number. For example: `str * 1`.

Finally, JavaScript provides several built-in functions that can be used to easily transform a string to a primitive number. These include `parseFloat()`, `parseInt()`, `Math.ceil()`, and `Math.floor()`.

In conclusion, converting a string to a number in JavaScript is a common task that has several methods available. Each method has its own advantages and disadvantages, and choosing the right one depends on your specific requirements and coding style.

String method to convert string to number javascript