6.Javascript String Contains Case-insensitive check To check for case-insensitive Javascript string contains, use the below methods. The simplest way is to convert the entire string to either to lowercase or uppercase and use the javascript indexOf, includes methods as shown below. var a...
In this example, the function returns true if the string contains any white space in it else it returns false Conclusion: So to detect any white space in a given string in Javascript we can use the regex test() method or the stringindexOf() method. Related Topics: How to check if Str...
How do you check if one string contains a substring in JavaScript?Craig Buckler
Operations with strings vary from splitting to the removal of whitespaces to checking if a string contains spaces. JavaScript provides built-in string methods and features that allow us to manipulate or work with strings. Strings are immutable, and so the way we work with them can be a little...
❮PreviousJavaScript StringReferenceNext❯ Examples Check if a string includes "world": lettext ="Hello world, welcome to the universe."; letresult = text.includes("world"); Try it Yourself » More examples below. Description Theincludes()method returnstrueif a string contains a specified ...
JavaScript – Detect if a string contains any space How to check if String contains only spaces in JavaScript Check if String starts with a space in JavaScript Replace all occurrences of a string in JavaScript Javascript – Convert array to String (with and without commas)...
使用javascript实现C#的String.contains() 1functionisContains(str, substr) {2returnstr.indexOf(substr) >= 0;3} str为源字符串; substr为查找的字符; 返回true代表包含,false代表不包含。
Example 1: Java String contains() classMain{publicstaticvoidmain(String[] args){ String str1 ="Learn Java"; Boolean result;// check if str1 contains "Java"result = str1.contains("Java"); System.out.println(result);// true// check if str1 contains "Python"result = str1.contains("Py...
JavaScript String includes() Theincludes()method returns true if a string contains a specified value. Otherwise it returnsfalse. Examples Check if a string includes "world": lettext ="Hello world, welcome to the universe."; text.includes("world"); ...
constmessage ="JavaScript is a fun programming language.";// regular expression that checks if message contains 'programming'constexp =/programming/; // check if exp is present in messageletresult = message.match(exp); console.log(result);/* ...