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This study analyzes the sociolinguistic phenomena of code-switching and code-mixing in the academic context of students in Pekalongan, Central Java. As a region with diverse backgrounds dominated by the Pekalongan dialect (Ngapak Javanese), interactions between students create space for complex language dynamics. This study aims to identify variations, roles, and factors that cause code-switching and code-mixing in student interactions. The method applied is descriptive qualitative with data collection through inactive participant observation, recording, and in-depth interviews at various universities in Pekalongan. Data analysis is carried out through the steps of data reduction, data presentation, and verification using triangulation techniques. The results show that the application of language codes is divided into two categories: an internal category that includes Indonesian and regional languages (Javanese), and an external category that includes foreign languages (English or Arabic). Code-mixing can be found at the word, phrase, and clause levels. The main factors that drive this phenomenon include participants, conversation themes, situational circumstances, and the purpose of communication in building solidarity among group members (ingroup).  The Pekalongan dialect plays a crucial role as a means of communication to build closeness and demonstrate local identity, amidst the need to use formal language on campus. This research concludes that code-switching and code-mixing are not merely linguistic phenomena, but also ways in which students adapt socially to balance their cultural identity with academic demands.  

This study analyzes the sociolinguistic phenomena of code-switching and code-mixing in the academic context of students in Pekalongan, Central Java. As a region with diverse backgrounds dominated by the Pekalongan dialect (Ngapak Javanese), interactions between students create space for complex language dynamics. This study aims to identify variations, roles, and factors that cause code-switching and code-mixing in student interactions. The method applied is descriptive qualitative with data collection through inactive participant observation, recording, and in-depth interviews at various universities in Pekalongan. Data analysis is carried out through the steps of data reduction, data presentation, and verification using triangulation techniques. The results show that the application of language codes is divided into two categories: an internal category that includes Indonesian and regional languages (Javanese), and an external category that includes foreign languages (English or Arabic). Code-mixing can be found at the word, phrase, and clause levels. The main factors that drive this phenomenon include participants, conversation themes, situational circumstances, and the purpose of communication in building solidarity among group members (ingroup).  The Pekalongan dialect plays a crucial role as a means of communication to build closeness and demonstrate local identity, amidst the need to use formal language on campus. This research concludes that code-switching and code-mixing are not merely linguistic phenomena, but also ways in which students adapt socially to balance their cultural identity with academic demands.  

This study examines the phenomenon of code-mixing among Generation Z in Banjarmasin, particularly in The comments section of TikTok content, which has become a primary digital expression space for young People. The aim of this study was to identify the forms, patterns, and social and cultural factors underlying This linguistic practice. Using descriptive qualitative methods with listening and note-taking techniques, Information was collected from comments on two TikTok posts on the accounts @BudRab and @Fazarbungaz. The findings indicate that the code-mixing that occurred was dominated by the insertion Of Banjarese elements into Indonesian (Banjar-Indonesian code-mixing), as well as a mixture of Banjarese, Indonesian, and English (Outer Code-mixing and Mixed Code-mixing). The forms of code-mixing found Included the insertion of Banjarese words, phrases, and lexical items such as kd (kada), makai, and mun. An analysis of the functions of code-mixing shows that this practice has a dual role: referential (for specific Local contexts), directive (to guide conversations), emotive/expressive (to indicate emotional closeness, for Example, longitude), and most importantly, as a marker of digital identity and cultural solidarity among Banjar speakers in the digital realm. This phenomenon confirms that social media serves as a new, flexible and essential space for the Banjar language to survive and negotiate with global and national languages. This study contributes to sociolinguistics by mapping the dynamics of language evolution among Gen Z in A digital context, highlighting the creative and social aspects of code-mixing.

This study aims to identify the forms of code-mixing present in the speech videos of Vice President Gibran Rakabuming, with the KOMPASTV YouTube channel serving as the data source. This phenomenon is interesting to examine because the use of code-mixing by state officials can influence public perceptions of the use of Indonesian in formal contexts, particularly in official speeches. The study employs a descriptive qualitative approach, using the observation and note method as the data collection technique. Data analysis was conducted through several stages, namely observing, noting, and then presenting as well as describing the forms of code-switching in Vice President Gibran Rakabuming’s speech videos. The results show that the type of code-mixing that occurs is outer code-mixing, characterized by the insertion of English vocabulary. The first video contained 9 instances of code-mixing, the second video 5 instances, the third video 4 instances, the fourth video 15 instances, and the fifth video 9 instances. These findings indicate that code-mixing is a phenomenon within the field of sociolinguistics and is commonly found among bilingual and multilingual communities.

This study investigates the occurrence and functions of nonstandard language variation in Instagram headlines posted by @folkative, a popular digital media account known for its creative use of informal language. Despite the growing attention to social media discourse, little research has focused on how nonstandard forms operate in short, attention-grabbing digital headlines. Guided by Labov’s (1972) variationist sociolinguistic framework, this study employs a descriptive qualitative method complemented by simple quantification. The data consist of headlines uploaded by @folkative throughout September 2025. The analysis reveals four main types of nonstandard variation: code-mixing, nonstandard spelling, colloquial expressions, and lexical innovation. Among these, code-mixing appears most frequently (33.93%). The use of nonstandard language is not arbitrary but rather reflects deliberate stylistic and social choices. These variations serve several communicative and pragmatic functions, including attracting readers’ attention, conveying humor, saving space within limited character counts, expressing solidarity with followers, and constructing a modern, cosmopolitan online identity. The findings demonstrate that nonstandard language in Instagram headlines contributes to meaning-making and audience engagement, showing how Indonesian users creatively manipulate linguistic resources to suit digital communication norms.

Language variation in the form of mixed code is a linguistic symptom that is often found in bilingual and multilingual communities, especially in popular media such as movies. This study aims to identify and describe the mixed forms of code that appear in the second season of the Imperfect: The Series series, specifically in episodes 1 to 5. This study uses a qualitative descriptive approach with data collection techniques in the form of recording and analysis of dialogues between figures that contain mixed elements of code. The research instrument is in the form of dialogue transcripts that are analyzed with a sociolinguistic approach, mainly based on the theory of mixed code according to Suwito (1985) and the theory of relevance of the social context according to Holmes (2013). The results of the study revealed two main categories of forms of code mixing, namely inner code mixing involving elements of regional languages, and outer code mixing which includes the insertion of words or phrases from foreign languages, such as English. Based on data analysis, it was found that there were 12 data mixed in code and 18 data mixed in code out. This phenomenon shows that the use of mixed codes in character dialogue not only serves as a marker of social and cultural identity, but also as a reflection of the dynamics of communication in a pluralistic and modern urban society. In addition, the use of mixed codes in audiovisual media also has pragmatic and aesthetic implications, which can strengthen character characterization, create humorous effects, adjust the context of social situations, and increase narrative appeal to young audiences who are familiar with multilingualism.

The phenomenon of code switching in TikTok is increasingly widespread among young Indonesians. Mixing Indonesian with foreign languages, especially English, is a communication style that is considered expressive, modern and a digital identity. This study aims to identify forms of code switching in TikTok content and analyze its implications for planning and fostering Indonesian in the digital era. This study uses a qualitative descriptive approach with data in the form of screenshots of TikTok videos containing code switching. The results of the analysis show that the code switching that occurs is mixed and situational and has affective, stylistic functions, as a marker of social identity. Although it reflects language creativity, excessive use of code switching can have negative impacts such as shifting the structure of the Indonesian language, decreasing positive attitudes towards the national language, and hindering effective language development efforts. This study is expected to be an important input for educators, policy makers and the wider community in maintaining the sustainability and dignity of the Indonesian language in the digital era. Keywords: Code switching, TikTok, Language development, Indonesian, Digital Era

This study addresses a central issue in multilingual digital communication: how code-mixing practices are employed by diaspora content creators to construct identity and foster cross-cultural audience engagement. This problem is significant given the rising prevalence of translanguaging on social media, which is often understudied within contextualized sociolinguistic frameworks. The research examines the sociolinguistic dynamics of code-mixing in the YouTube content of Xaviera Putri, an Indonesian creator based in South Korea, to understand how multilingual practices shape digital interaction and transnational identity. Using a qualitative case study approach integrated with critical discourse analysis, the study analyzes 12 hours of video content (2022–2024) featuring 58 instances of code-mixing. Findings reveal three primary patterns: intra-sentential mixing (67%) used to preserve cultural concepts and fill lexical gaps; inter-sentential switching (22%) functioning as discourse organizers; and tag switching (11%) serving as politeness strategies. Thematic analysis identifies three key sociopragmatic functions: acting as a cultural broker, audience design for multilingual engagement, and identity negotiation within KAIST’s academic community. These results support translanguaging theory by demonstrating how hybrid language practices reconcile cultural authenticity with global accessibility. The study contributes to theoretical advancements in digital sociolinguistics and offers practical frameworks for content creators navigating multilingual digital ecosystems.

This study aims to examine in depth the use of slang in digital communication by TikTok Gen Z content creator, Nathalie Tresya. Slang as a form of language variation reflects social dynamics, generational identity, and popular culture trends that develop in the digital space. This study uses a qualitative descriptive approach with a non-participatory observation method. Data were collected from a number of TikTok videos uploaded by Nathalie Tresya, focusing on verbal and textual speech containing slang elements. Analysis was conducted to identify the form, function, and context of slang use in the content studied. The results of the study show that Nathalie Tresya uses various forms of slang such as abbreviations, puns, foreign loanwords, and code mixing between Indonesian and English. This language is used as a communication strategy to build closeness with the audience, display identity as part of Gen Z, and increase the appeal of content on the TikTok platform. These findings confirm that social media, especially TikTok, is a medium that actively encourages the birth of new language forms that are worthy of being studied in the context of digital sociolinguistics.

The digital era has brought significant changes to the use of Indonesian in various aspects of life, including daily communication, the academic world, as well as the creative industry and tourism. Phenomena such as code-mixing, the use of slang, and the dominance of foreign terms in the formal sphere show that Indonesian continues to develop following the dynamics of globalization. This research aims to analyze how the linguistic development of Indonesian in the digital era affects the structure, meaning, and function of communication in society. The research methods used are literature review and phenomenological analysis of language use in social media, the world of work, and the tourism sector. The results show that although the digital era enriches vocabulary and communication expressions, there are challenges in preserving Indonesian as a national identity. The increasingly dominant influence of foreign languages has the potential to shift the use of Indonesian in formal and academic domains. Therefore, an adaptive language policy strategy is needed, including digital literacy education and increasing public linguistic awareness, to maintain a balance between the development and preservation of Indonesian.

The digital era has brought significant changes to the use of Indonesian in various aspects of life, including daily communication, the academic world, as well as the creative industry and tourism. Phenomena such as code-mixing, the use of slang, and the dominance of foreign terms in the formal sphere show that Indonesian continues to develop following the dynamics of globalization. This research aims to analyze how the linguistic development of Indonesian in the digital era affects the structure, meaning, and function of communication in society. The research methods used are literature review and phenomenological analysis of language use in social media, the world of work, and the tourism sector. The results show that although the digital era enriches vocabulary and communication expressions, there are challenges in preserving Indonesian as a national identity. The increasingly dominant influence of foreign languages has the potential to shift the use of Indonesian in formal and academic domains. Therefore, an adaptive language policy strategy is needed, including digital literacy education and increasing public linguistic awareness, to maintain a balance between the development and preservation of Indonesian.

This research is motivated by the symptoms of language selection in Ustazah Mumpuni Handayayekti, namely code switching and code mixing. The objectives of this study are 1) to describe the form of code switching in Ustazah Mumpuni Handayayekti's lecture, 2) to describe the factors causing code switching in Ustazah Mumpuni Handayayekti's lecture, 3) to describe the form of code mixing in Ustazah Mumpuni Handayayekti's lecture, 4) to describe the factors causing code mixing in Ustazah Mumpuni Handayayekti's lecture. This research is a qualitative descriptive research. The data source in this research is Ustazah Mumpuni Handayayekti's lecture video on Youtube. The data in this study are the speech of Ustazah Mumpuni Handayayekti which allegedly contains symptoms of code switching and code mixing. The data collection method in this research uses the listening method. As for the data collection technique, this research uses free listening and note-taking techniques. The data analysis method in this research uses the agih method. The results of this study show that there are several types of code switching and code mixing done by Ustazah Mumpuni Handayayekti. The forms of code switching found in this study are 1) internal code switching, 2) external code switching. While the form of code mix found in this study is code mix in the form of words, phrases, idioms, baster, and repetition. Factors causing code switching in Ustazah Mumpuni Handayayekti's lectures include 1) speakers, 2) speech partners, 3) to ease tension and inject humor,  4) changes in situation, and 5) changes in topic. While the factors causing code mix in Ustazah Mumpuni Handayayekti are 1) speakers, 2) limited word equivalents, 3) to generate a sense of humor, 4) to convey the message of cultural expression.

The waning enthusiasm for preserving the nation's wealth, one of which is regional languages, has become a serious problem that has occurred in recent years. However, only a few Indonesian people are aware of it. Regional languages, especially Serang Javanese, are on the verge of extinction. According to the data obtained, there are three million speakers of Serang Javanese, while the majority of Jaseng (Serang Javanese) speakers are in Cilegon, Serang and a small number in Tangerang, Banten Province. Unfortunately, Banten Javanese language users are starting to be eroded by the progress of the times, people are more in favor of slang communication, South Jakarta language, and the influence of other foreign languages. If the number of speakers decreases from before, it is possible that in the next few years the Jaseng language will experience extinction, which will result in the loss of the local wisdom of the people of Serang district. The good news is that the role of social media, which does not always have a negative impact on society, is actually one of the savior media in preventing the extinction of regional languages. One of them was proven by the owner of an influencer Instagram account from Serang who planned to create content that speaks the Serang Javanese language even though it is part of the code-mixing phenomenon. This research aims to reveal every content with the concept of the code-mixing phenomenon in Mang Aplen's Instagram account in detail, starting from the words, phrases and particles used in the communication. The method used in this research is a descriptive qualitative method which is carried out by analyzing data obtained from speech on Instagram content. The results obtained from this analysis are that there are several single words, phrases, affixes, word repetitions and particles of the Serang Javanese language, dialects and customary activities of the Serang Banten people in the context of entertainment, which are very popular with the community, which reflects the maintenance of the Serang Javanese language. and the local wisdom of the Serang Regency community, this is believed to be able to build community enthusiasm in maintaining the Jaseng language and the local wisdom of the Serang community so that it remains sustainable and strong.

This research discusses the use of code-mixing in the lyrics of the song “Now I Know” by Kaleb J. Code-mixing, in the form of the insertion of English elements into Indonesian lyrics, often appears in modern music as a response to globalization. A qualitative research approach is used to identify the forms of code-mixing (words, phrases, and clauses), its function, and its impact on the song's message. The results of the analysis show that code-mixing dominates the chorus with English to accentuate emotional intensity, while Indonesian is present in the verses to provide a narrative that is familiar to local listeners. The use of two languages reflects a balance between local and global elements, enhancing the musical aesthetics and international appeal of the song. Intercoding acts as a linguistic and artistic tool that expands the range of listeners, supports the themes of love and regret, and strengthens pop music's connection to globalization trends.