const regex = /^[^{}]+{/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^[^{}]+{', 'gm')
const str = `.match_num {
font-family: futura, helvetica, arial;
font-variant: small-caps;
color: #84BDE7;
color: #0066B3;
font-size: 12px;
font-weight: normal;
display: inline-block;
}
.match0,.match1,.match2,.match3,.match4,.match5,.match6,.match7,.match8,.match9,.match10,.match11 {
white-space: pre-wrap;
font-size: 12px;
padding: 1px 2px;
}
.backref_hover {
cursor: help;
}
input {
blah: blah;
}
.stuff {
problem: here;
}
.hello
{
whatever
}`;
// 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