47 lines
1.0 KiB
JavaScript
47 lines
1.0 KiB
JavaScript
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/**
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* @author yutent<yutent.io@gmail.com>
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* @date 2020/09/16 11:58:40
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*/
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// 简单的数字处理
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// 将安全范围内的数字字符串转为数字类型
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// 否则转为字符串类型
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if (!Number.parse) {
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Object.defineProperty(Number, 'parse', {
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value: function(val) {
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if (typeof val === 'number' || typeof val === 'string') {
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val += ''
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if (val.startsWith('0') && !val.startsWith('0.')) {
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if (val === '0') {
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return 0
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} else {
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return val
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}
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} else {
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if (isFinite(val)) {
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if (
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val >= Number.MIN_SAFE_INTEGER &&
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val <= Number.MAX_SAFE_INTEGER
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) {
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val = +val
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}
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}
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return val
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}
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}
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return val
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},
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enumerable: false
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})
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}
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// 将字符串转为数字类型
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if (!Number.fromString) {
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Object.defineProperty(Number, 'fromString', {
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value: function(val) {
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return +val || 0
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},
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enumerable: false
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})
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}
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