Math.pow(2,53)//=> 9007199254740992: 2 to the power 53Math.round(.6)//=> 1.0: round to the nearest integerMath.ceil(.6)//=> 1.0: round up to an integerMath.floor(.6)//=> 0.0: round down to an integerMath.abs(-5)//=> 5: absolute valueMath.max(x,y,z)//Return the lar...
Math.round(.6) // => 1.0: round to the nearest integer Math.ceil(.6) // => 1.0: round up to an integer Math.floor(.6) // => 0.0: round down to an integer Math.abs(-5) // => 5: absolute value Math.max(x,y,z) // Return the largest argument Math.min(x,y,z) // ...
// Round down to the next lower integer. result = Math.floor(number_to_round); alert(number_to_round + " rounded down: "+result); // Expected result: 1234 // Round to the nearest integer. result = Math.round(number_to_round); alert(number_to_round + " rounded nearest: "+result)...
<!DOCTYPE html> JavaScript Math.round() Math.round(x) returns the value of x rounded to its nearest integer: document.getElementById("demo").innerHTML = Math.round(4.5); 18.3 Math.pow(x,y)返回x的y次幂 <!DOCTYPE html> JavaScript Math.pow() Math.pow(x,y) returns the v...
toFixed(decimalPlaces).split('.'); let integerPart = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, thousandSeparator); let decimalPart = parts[1] ? decimalSeparator + parts[1] : ''; return integerPart + decimalPart; } let num = 1234567.89012; let formattedNum = formatNumber(num...
当数字超过Number.MAX_SAFE_INTEGER时,建议使用: BigInt(Math.floor(Number(`${bigNum}e2`))) /100n AI代码助手复制代码 性能对比(百万次操作耗时) 总结建议 常规需求:优先使用Math.round()组合运算 显示格式化:用toFixed()+parseFloat 超大数字:考虑使用BigInt类型 ...
function randomInteger(min, max) { let rand = min + Math.random() * (max - min); return Math.round(rand); } alert( randomInteger(1, 3) ); 获得边缘值 min 和 max 的概率比其他值''低两倍'';💡因为 Math.round() 从范围 1..3 中获得随机数,并按如下所示进行四舍五入: values from...
round() Rounds x to the nearest integer Math pow() Returns the value of x to the power of y Math previousSibling Returns the previous node at the same node tree level Element previousElementSibling Returns the previous element at the same node tree level Element prompt() Displays a dialog ...
var CN_INTEGER = "整"; // Variables: var integral; // Represent integral part of digit number. var decimal; // Represent decimal part of digit number. var outputCharacters; // The output result. var parts; var digits, radices, bigRadices, decimals; ...
Math.round(x)Returns x rounded to its nearest integer Math.ceil(x)Returns x rounded up to its nearest integer Math.floor(x)Returns x rounded down to its nearest integer Math.trunc(x)Returns the integer part of x (new in ES6) Math.round() ...