What are the data type conversion functions in JavaScript?

Data type conversion functions include: toExponential(), toFixed(), toPrecision(), String(), getDate(), getFullYear(), Number(), parseFloat(), parseInt(), etc.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Data type conversion in JavaScript

1. Convert numbers to strings

• toExponential() Convert the value of the object to exponential notation.

• toFixed() Converts a number to a string. The result has the specified number of digits after the decimal point.

• toPrecision() Format the number to the specified length.

2. Convert Boolean value to string

String(): You can convert Boolean value to string

3. Convert the date to a string

• Date() returns a string representing the date

• String( ) You can convert the date object into a string
  

• getDate() returns the day of the month (1 ~ 31) from the Date object.

• getDay() Returns the day of the week (0 ~ 6) from the Date object.

• getFullYear() Returns the year as a four-digit number from a Date object.

• getHours() Returns the hours (0 ~ 23) of the Date object.

• getMilliseconds() returns the milliseconds (0 ~ 999) of the Date object.

• getMinutes() Returns the minutes (0 ~ 59) of the Date object.

• getMonth() Returns the month (0 ~ 11) from the Date object.

• getSeconds() Returns the number of seconds (0 ~ 59) of the Date object.

• getTime() Returns the number of milliseconds since January 1, 1970.

4. Convert strings to numbers

• Number(): You can convert strings to numbers

• parseFloat() Parses a string and returns a floating point number.

• parseInt() Parses a string and returns an integer.

[Recommended learning: javascript advanced tutorial]

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