const regex = />[^<^\w]+</g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('>[^<^\\w]+<', 'g')
const str = `<?xml version="1.0" encoding="UTF-8"?>
<ORDRSP>
<UNH>
<E0062>MSG127</E0062>
<S009>
<E0065>ORDRSP</E0065>
<E0052>D</E0052>
<E0054>01B</E0054>
<E0051>UN</E0051>
<E0057>EAN010</E0057>
</S009>
</UNH>
<BGM>
<C002>
<E1001>231</E1001>
</C002>
<C106>
<E1004>ORSP12856</E1004>
</C106>
<E1225>4</E1225>
</BGM>
<DTM>
<C507>
<E2005>137</E2005>
<E2380>20041230</E2380>
<E2379>102</E2379>
</C507>
</DTM>
<DTM>
<C507>
<E2005>55</E2005>
<E2380>20041230</E2380>
<E2379>102</E2379>
</C507>
</DTM>
<FTX>
<E4451>TRA</E4451>
<C108>
<E4440>МАШ:3;30.06.2011,07:00-11:00,001;30.06.2011,17:30-18:00,001;29.06.2011,12:00-14:00,001;</E4440>
</C108>
</FTX>
<SG1>
<RFF>
<C506>
<E1153>ON</E1153>
<E1154>652744</E1154>
</C506>
</RFF>
<DTM>
<C507>
<E2005>171</E2005>
<E2380>20041229</E2380>
<E2379>102</E2379>
</C507>
</DTM>
</SG1>
<SG3>
<NAD>
<E3035>BY</E3035>
<C082>
<E3039>4607078289991</E3039>
<E3055>9</E3055>
</C082>
</NAD>
</SG3>
<SG3>
<NAD>
<E3035>SU</E3035>
<C082>
<E3039>4607077429992</E3039>
<E3055>9</E3055>
</C082>
</NAD>
</SG3>
<SG3>
<NAD>
<E3035>DP</E3035>
<C082>
<E3039>4606038009747</E3039>
<E3055>9</E3055>
</C082>
</NAD>
</SG3>
<SG26>
<LIN>
<E1082>1</E1082>
<E1229>3</E1229>
<C212>
<E7140>03312345501003</E7140>
<E7143>SRV</E7143>
</C212>
</LIN>
<PIA>
<E4347>1</E4347>
<C212>
<E7140>23543245634</E7140>
<E7143>SA</E7143>
</C212>
</PIA>
<PIA>
<E4347>1</E4347>
<C212>
<E7140>657867</E7140>
<E7143>IN</E7143>
</C212>
</PIA>
<QTY>
<C186>
<E6063>21</E6063>
<E6060>500</E6060>
</C186>
</QTY>
<QTY>
<C186>
<E6063>170</E6063>
<E6060>300</E6060>
</C186>
</QTY>
<SG30>
<PRI>
<C509>
<E5125>AAA</E5125>
<E5118>342.00</E5118>
</C509>
</PRI>
</SG30>
</SG26>
<UNS>
<E0081>S</E0081>
</UNS>
<CNT>
<C270>
<E6069>2</E6069>
<E6066>1</E6066>
</C270>
</CNT>
<UNT>
<E0074>15</E0074>
<E0062>MSG127</E0062>
</UNT>
</ORDRSP>
`;
const subst = `><`;
// The substituted value will be contained in the result variable
const result = str.replace(regex, subst);
console.log('Substitution result: ', result);
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