mirror of https://github.com/thangisme/notes.git
42 lines
933 B
JavaScript
42 lines
933 B
JavaScript
var minus = '-'.charCodeAt(0);
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var plus = '+'.charCodeAt(0);
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var dot = '.'.charCodeAt(0);
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module.exports = function (value) {
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var pos = 0;
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var length = value.length;
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var dotted = false;
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var containsNumber = false;
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var code;
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var number = '';
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while (pos < length) {
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code = value.charCodeAt(pos);
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if (code >= 48 && code <= 57) {
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number += value[pos];
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containsNumber = true;
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} else if (code === dot) {
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if (dotted) {
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break;
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}
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dotted = true;
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number += value[pos];
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} else if (code === plus || code === minus) {
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if (pos !== 0) {
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break;
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}
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number += value[pos];
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} else {
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break;
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}
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pos += 1;
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}
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return containsNumber ? {
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number: number,
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unit: value.slice(pos)
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} : false;
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};
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