or (case-insensitive): if (referrer.toLowerCase().includes(someString.toLowerCase())) { ... } Here is some comparison of .indexOf() and .includes(): https://dev.to/adroitcoder/includes-vs-indexof-in-javascript Share Improve this answer Follow edited Feb 10, 2020 at 14:31 thSo...
test(str); // i is case insensitive // If you use unicode characters then this might be a better expression // thank you @Touffy let isMatch = new RegExp('(?:^|\\s)'+search, 'i').test(str); // i is case insensitive 在上面的代码中 \b 用于表示单词边界,因此 glass 是一个...
";constsearchValue="world";if(str.toLowerCase().includes(searchValue.toLowerCase())){console.log(`${searchValue}is found (case-insensitive).`);} 2. 从指定位置开始查找:虽然includes()本身不支持从指定索引开始查找,但可以通过截取子字符串实现类似效果。 conststr="Hello, world! How are you?";...
if (str.toLowerCase().includes(searchValue.toLowerCase())) { console.log(`${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 = "Hello, world! How are you?"; const searchFrom...
let string="Stackoverflow is the BEST"; let searchstring="best"; let found = string.toLowerCase() .includes(searchstring.toLowerCase()); includes() returns true if searchString appears at one or more positions or false otherwise. Share Follow edited Oct 9, 2018 at 16:35 Alexander ...
convert both the string and the search string to lower case.str.toLowerCase().includes('Stark'.toLowerCase()); // truestr.toLowerCase().indexOf('Stark'.toLowerCase()) !== -1; // truestr.toLowerCase().includes('Snow'.toLowerCase()); // falsestr.toLowerCase().indexOf('...
JavaScript 对象是动态的——属性通常可以添加和删除——但它们可以用来模拟静态类型语言的静态对象和“结构”。它们也可以被用来(通过忽略字符串到值映射的值部分)表示字符串集合。 任何在 JavaScript 中不是字符串、数字、符号、true、false、null或undefined的值都是对象。即使字符串、数字和布尔值不是对象,它们也可...
To make the `String.includes()` method case insensitive, convert both of the strings in the comparison to lowercase.
The Silverlight version includes extra checks to properly handle JSON-serializing JavaScript variables that are really JavaScript proxies for managed objects in the same domain as the Silverlight control. For example, if a JavaScript object has the property p1, which is really a JavaScript prox...
text.includes("world"); Try it Yourself » Check if a string includes "world". Start at position 12: lettext ="Hello world, welcome to the universe."; text.includes("world",12); Try it Yourself » Notes includes()is case sensitive. ...