JS取模、取商及取整运算方法示例

//求余数
document.write(1%4);
document.write(6%4);
//求商
console.info(1/4);
console.info(6/4);
//求商，取整
console.info(parseInt(1/4));
console.info(parseInt(6/4));
console.info('----');
//天花板取整
console.info(Math.ceil(1/4));
//地板取整
console.info(Math.floor(1/4));