What is javascript shaping?

JavaScript's integer refers to the integer in the Number type. In JavaScript, Number type data can be integers, floating point numbers, or numbers represented in scientific notation.

The integer range that JavaScript's Number type can represent is from -2^53 1 to 2^53 - 1. In other words, the range of integers that JavaScript can handle is limited. If you exceed this range, JavaScript will not be able to accurately represent the number, and a loss of precision may occur.

In JavaScript, you can use the parseInt() function to convert a string into an integer. This function receives a string as argument and returns the integer represented by the string. For example, parseInt("123") returns the integer 123.

In addition, there is a Math object in JavaScript, which contains methods for processing numbers. The Math.floor() method rounds a floating point number down and returns an integer. For example, Math.floor(3.14) returns the integer 3. The Math.round() method can round a floating point number to the nearest integer and return an integer. For example, Math.round(3.49) will return the integer 3, and Math.round(3.5) will return the integer 4.

It should be noted that when processing numbers, JavaScript will perform implicit type conversion. For example, when you use the equality operator (==) to compare numbers and strings, JavaScript converts the strings into numbers and then compares them. If you need to avoid problems caused by implicit type conversions, you can use the strict equals operator (===) for comparison, which compares the type and value at the same time and returns true only if both are the same.

In summary, JavaScript integers refer to integers in the Number type. The range of integers that JavaScript can handle is limited. You can use the parseInt() function to convert strings into integers. The Math object also includes processing numbers. method. In addition, when comparing numbers and strings, you need to pay attention to the problems caused by implicit type conversion.

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