const regex = /^[-+](?:[0-9]*[.])?[0-9]+|(?<=\(|\/|\*)[+-](?:[0-9]*[.])?[0-9]+|(?:[0-9]*[.])?[0-9]+|[-+*\/()]/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^[-+](?:[0-9]*[.])?[0-9]+|(?<=\\(|\\\/|\\*)[+-](?:[0-9]*[.])?[0-9]+|(?:[0-9]*[.])?[0-9]+|[-+*\\\/()]', 'g')
const str = `-0.17+(24.4/-12.2)
(17-13)/+0.5
(9.25*((+12.5+1.3)-5.8))/(0.125*((13.2+2.8)*2))
19-((34.99/1)+14
((2.80-4.3)*((((9.3-2.3))+7)/3.5))`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions