20 lines
619 B
Java
20 lines
619 B
Java
var padEnd = require('../string/padEnd')
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var helperFixedNumber = require('./helperFixedNumber')
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/**
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* 和 Number.toFixed 类似，区别就是不会对小数进行四舍五入，结果返回字符串
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*
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* @param { String/Number } str 数值
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* @return {String}
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*/
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function toFixedString (str, digits) {
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var nums = helperFixedNumber(str, digits).split('.')
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var rest = digits ? [nums[0], '.', padEnd(nums[1] || '', digits, '0')].join('') : nums[0]
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if (rest.substring(0, 1) === '-' && parseFloat(rest) === 0) {
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return digits ? rest.replace(/^-/, '') : '0'
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}
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return rest
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}
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module.exports = toFixedString
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