Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

const regex = /^\d{4}-\d{2}-\d{2}.*(?:\n(?!(?:\d{4}-\d{2}-\d{2}|\h+at)).*)*\n\h+at\h+.*(?:\n(?!\d{4}-\d{2}-\d{2}).*)*/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('^\\d{4}-\\d{2}-\\d{2}.*(?:\\n(?!(?:\\d{4}-\\d{2}-\\d{2}|\\h+at)).*)*\\n\\h+at\\h+.*(?:\\n(?!\\d{4}-\\d{2}-\\d{2}).*)*', 'gm') const str = `2019-06-14 15:07:08,142 ThreadPoolAsyncTaskExecutor::Thread 65 ERROR bamboo_user 906x78989x1 vg7ahz 192.168.181.28 /rest/plugins/1.0/bg.nemetschek.jsd.advance-customer-reports-key [o.e.g.b.e.i.dependencies.startup.DependencyWaiterApplicationContextExecutor] Unable to create application context for [bg.nemetschek.jsd.advance-customer-reports], unsatisfied dependencies: none org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [bundle://293.0:0/META-INF/spring/atlassian-plugins-component-imports.xml]; nested exception is java.lang.IllegalStateException: The bundle is uninstalled. at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188) at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:170) at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:140) at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129) at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:609) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.access\$800(AbstractDelegatedExecutionApplicationContext.java:60) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext\$3.run(AbstractDelegatedExecutionApplicationContext.java:242) at org.eclipse.gemini.blueprint.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.startRefresh(AbstractDelegatedExecutionApplicationContext.java:220) at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:224) at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:177) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:157) at org.eclipse.gemini.blueprint.extender.internal.activator.LifecycleManager\$1.run(LifecycleManager.java:207) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor\$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.IllegalStateException: The bundle is uninstalled. at org.apache.felix.framework.Felix.getBundleResources(Felix.java:1624) at org.apache.felix.framework.BundleImpl.getResources(BundleImpl.java:661) at org.eclipse.gemini.blueprint.util.BundleDelegatingClassLoader.getResources(BundleDelegatingClassLoader.java:185) at org.springframework.core.io.support.PropertiesLoaderUtils.loadAllProperties(PropertiesLoaderUtils.java:177) at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.getHandlerMappings(DefaultNamespaceHandlerResolver.java:155) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins\$Plugin.resolve(NamespacePlugins.java:77) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins\$5.operate(NamespacePlugins.java:209) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins\$5.operate(NamespacePlugins.java:205) at org.eclipse.gemini.blueprint.extender.internal.support.LazyBundleRegistry.apply(LazyBundleRegistry.java:159) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.doResolve(NamespacePlugins.java:205) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.resolve(NamespacePlugins.java:169) ... 2 filtered at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.gemini.blueprint.context.support.TrackingUtil\$OsgiServiceHandler.invoke(TrackingUtil.java:106) at com.sun.proxy.\$Proxy605.resolve(Unknown Source) at org.eclipse.gemini.blueprint.context.support.DelegatedNamespaceHandlerResolver.resolve(DelegatedNamespaceHandlerResolver.java:55) at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1406) at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1401) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:168) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:138) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392) ... 20 more 2019-06-14 15:07:08,142 ThreadPoolAsyncTaskExecutor::Thread 65 ERROR bamboo_user 906x78989x1 vg7ahz 192.168.181.28 /rest/plugins/1.0/bg.nemetschek.jsd.advance-customer-reports-key [o.e.g.b.e.i.dependencies.startup.DependencyWaiterApplicationContextExecutor] Unable to create application context for [bg.nemetschek.jsd.advance-customer-reports], unsatisfied dependencies: none org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [bundle://293.0:0/META-INF/spring/atlassian-plugins-component-imports.xml]; nested exception is java.lang.IllegalStateException: The bundle is uninstalled. at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:414) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217) at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188) at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:170) at org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext.loadBeanDefinitions(OsgiBundleXmlApplicationContext.java:140) at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129) at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:609) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.access\$800(AbstractDelegatedExecutionApplicationContext.java:60) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext\$3.run(AbstractDelegatedExecutionApplicationContext.java:242) at org.eclipse.gemini.blueprint.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.startRefresh(AbstractDelegatedExecutionApplicationContext.java:220) at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:224) at org.eclipse.gemini.blueprint.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:177) at org.eclipse.gemini.blueprint.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:157) at org.eclipse.gemini.blueprint.extender.internal.activator.LifecycleManager\$1.run(LifecycleManager.java:207) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor\$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.IllegalStateException: The bundle is uninstalled. at org.apache.felix.framework.Felix.getBundleResources(Felix.java:1624) at org.apache.felix.framework.BundleImpl.getResources(BundleImpl.java:661) at org.eclipse.gemini.blueprint.util.BundleDelegatingClassLoader.getResources(BundleDelegatingClassLoader.java:185) at org.springframework.core.io.support.PropertiesLoaderUtils.loadAllProperties(PropertiesLoaderUtils.java:177) at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.getHandlerMappings(DefaultNamespaceHandlerResolver.java:155) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins\$Plugin.resolve(NamespacePlugins.java:77) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins\$5.operate(NamespacePlugins.java:209) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins\$5.operate(NamespacePlugins.java:205) at org.eclipse.gemini.blueprint.extender.internal.support.LazyBundleRegistry.apply(LazyBundleRegistry.java:159) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.doResolve(NamespacePlugins.java:205) at org.eclipse.gemini.blueprint.extender.internal.support.NamespacePlugins.resolve(NamespacePlugins.java:169) ... 2 filtered at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.gemini.blueprint.context.support.TrackingUtil\$OsgiServiceHandler.invoke(TrackingUtil.java:106) at com.sun.proxy.\$Proxy605.resolve(Unknown Source) at org.eclipse.gemini.blueprint.context.support.DelegatedNamespaceHandlerResolver.resolve(DelegatedNamespaceHandlerResolver.java:55) at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1406) at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1401) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:168) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:138) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392) ... 20 more`; // 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