if (str.toLowerCase().includes(searchValue.toLowerCase())) { console.log(`${searchValue} is found (case-insensitive).`); } 2. 从指定位置开始查找:虽然includes()本身不支持从指定索引开始查找,但可以通过截取子字符串实现类似效果。 const str =
includes(searchValue.toLowerCase())) { console.log(`${searchValue} is found (case-insensitive).`); } 2. 从指定位置开始查找:虽然 includes() 本身不支持从指定索引开始查找,但可以通过截取子字符串实现类似效果。 const str = "Hello, world! How are you?"; const searchFromIndex = 7; const ...
const str = 'arya stark';// The most concise way to check substrings ignoring case is using// `String#match()` and a case-insensitive regular expression (the 'i')str.match(/Stark/i); // truestr.match(/Snow/i); // false// You can also convert both the string and the search st...
# Make includes() case insensitive in JavaScript To make the String.includes() method case insensitive, convert both of the strings in the comparison to lowercase. A case-insensitive comparison is done by converting the two strings to the same case. index.js const str = 'HELLO WORLD'; const...
We look at the defaultArray.prototype.sortbehavior and discuss how you can do case insensitive string sorting. const foo =['Alpha','beta','Gamma','delta']; foo.sort((a, b)=>a.toLowerCase().localeCompare(b.toLowerCase()));
对象是 JavaScript 中最基本的数据类型,您在本章之前的章节中已经多次看到它们。因为对象对于 JavaScript 语言非常重要,所以您需要详细了解它们的工作原理,而本章提供了这些细节。它从对象的正式概述开始,然后深入到关于创建对象和查询、设置、删除、测试和枚举对象属性的实用部分。这些以属性为重点的部分之后是关于如何扩...
matcherfunctioncase insensitiveThe method used to determine if a query matches an item. Accepts a single argument, theitemagainst which to test the query. Access the current query withthis.query. Return a booleantrueif query is a match. ...
matcherfunctioncase insensitiveThe method used to determine if a query matches an item. Accepts a single argument, theitemagainst which to test the query. Access the current query withthis.query. Return a booleantrueif query is a match. ...
Range.prototype.includes = function(x) { return this.from <= x && x <= this.to; }; Range.prototype.toString = function() { return "(" + this.from + "..." + this.to + ")"; }; 9.3 使用class关键字的类 类自从语言的第一个版本以来就一直是 JavaScript 的一部分,但在 ES6 中,...
Perform a case-insensitive search: Demo CodeResultView the demo in separate window <!DOCTYPE html> Test function myFunction() {/* w w w . ja va 2s. co m*/ var str = "Blue blue red" var n = str.search(/blue/i); document.getElementById("demo").innerHTML = n; } ...