math.trunc

JavaScript | Math.trunc()方法 (JavaScript | Math.trunc() Method)

Math.trunc() is a function in math library of JavaScript that is used to extract the integer part of the given floating-point number. It removes the decimal and all the digits after it (right of it).

Math.trunc()是JavaScript數學庫中的函數，用于提取給定浮點數的整數部分。 它將刪除小數點及其后的所有數字(右邊)。

Syntax:

句法：

    Math.trunc(value);

Parameter(s):

參數：

• value – represents the value which is the float from which integer values is to be extracted.

  value –表示從浮點數中提取整數值的值。

Return value:

返回值：

The return type of this method is number, it returns an integer.

該方法的返回類型為number ，它返回一個整數。

Values accepted: Integer, floating-point, numeric string.

接受的值：整數，浮點數，數字字符串。

Invalid Values: non-numeric string, empty variable, empty array all will return NaN (Not a Number).

無效值：非數字字符串，空變量，空數組都將返回NaN(非數字)。

Browser support: Chrome, Internet asinlorer, Mozilla, Safari, Opera mini.

瀏覽器支持： Chrome，Internet代理，Mozilla，Safari，Opera mini。

Example 1: Valid values

示例1：有效值

console.log(Math.trunc(5.4));
console.log(Math.trunc(-3.87646801));
console.log(Math.trunc(0));
console.log(Math.trunc("-0.65"));

Output

輸出量

5
-3
0
-0

Example 2: Invalid values

示例2：無效值

console.log(Math.trunc("Javascript"));

Output

輸出量

NaN

翻譯自: https://www.includehelp.com/code-snippets/math-trunc-method-with-example-in-javascript.aspx

math.trunc