To check if a Javascript String Contains a substring or not, we can use 7 different Javascript methods as listed in below table.
How do you check if one string contains a substring in JavaScript?Craig Buckler
See Also: The split() Method The slice() Method The substring() Method Syntax string.substr(start, length) Parameters Parameter Description start Required.The start position.First character is at index 0. If start is greater than the length, substr() returns "".If start is negative, substr...
When calling the internal method of O [[DefaultValue]] without prompt, it behaves as if the prompt is a number, unless O is a date object (see 15.9.6), in which case it behaves as if the prompt is a string. The above [[DefaultValue]] specification for native objects can only return...
passed, as Uint8Array* objects, to this processChunk callback.** streamBody() returns a Promise that resolves to a string. If a processChunk* callback was supplied then this string is the concatenation of the values* returned by that callback. Otherwise the string is the concatenation of*...
How to check whether a string contains a substring in JavaScript?回答1CMAScript 6 introduced String.prototype.includes:const string = "foo"; const substring = "oo"; console.log(string.includes(substring)); // trueincludes doesn’t have Internet Explorer support, though. In ECMAScript 5 or ...
String slice() String substring() String substr() See Also: String Search Methods String Templates String toUpperCase() String toLowerCase() String concat() String trim() String trimStart() String trimEnd() String padStart() String padEnd() ...
{@link (InterfaceL1:interface).(:FUNCTOR)}** {@label FUNCTOR}*/(source: string, subString: string): boolean;/*** Shortest name: {@link InterfaceL1.(:CONSTRUCTOR)}* Full name: {@link (InterfaceL1:interface).(:CONSTRUCTOR)}** {@label CONSTRUCTOR}*/new (hour: number, minute: number);...
Re-check if the // target element was moved to another parent. if (!scrollParent || !scrollParent.contains(targetElement)) { parentElement = targetElement; do { if (parentElement.scrollHeight > parentElement.offsetHeight) { scrollParent = parentElement; targetElement.fastClickScrollParent = ...
constructor Returns the function that created the Array object's prototype Array, Boolean, Date, Number, Object, RegExp, String contains() Returns true if a node is a descendant of a node, otherwise false Element, DOMTokenList contentEditable Sets or returns whether the content of an element ...