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 string. ...
Use the includes() method to search for a substring inside a string: var word = "bravery"; console.log(word.includes(“rave”)); // true Copy Syntax This quick and easy way to check if one string contains another is very simple to implement. Just call the method with the substring ...
Examples Convert different values to strings: String(newDate()); String("12345"); String(12345); Try it Yourself » Description TheString()method converts a value to a string. Note The String() method returns the same as the toString() method for any value. ...
js随笔(二):JS String Method String Methods and Properties String.length: length() 返回字符串长度 1 2 var txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; var sln = txt.length; Finding a String in a String: indexOf(str,[, index]) 在字符串中找到你想要的字符串,indexOf返回的位置是你搜索字符串第一次...
JSValue.HasProperty(String) Method Reference Feedback Definition Namespace: JavaScriptCore Assembly: Xamarin.iOS.dll Returnstrueif this JSValue has the specifiedproperty. C# [Foundation.Export("hasProperty:")]publicvirtualboolHasProperty(stringproperty); ...
String 值的 includes() 方法执行区分大小写的搜索,以确定是否可以在一个字符串中找到另一个字符串,并根据情况返回 true 或 false。
includes(String str) - Checks if the search value is within the string. indexOf(String searchValue, [Integer start]) - Finds the first instance of the search value within the string. Starts at an optional offset. lastIndexOf(String searchValue, [Integer start]) - Finds the last instance ...
Applying the method Character.toLowerCase(char) to each character produces the same result. Parameters: anotherString - the String to compare this String against. Returns: true if the argument is not null and the Strings are equal, ignoring case; false otherwise. See Also: equals(Object), ...
console.log(nameList.includes(23));//at 按照下标返回索引的位置的值console.log(nameList.at(1)); console.log(nameList.at(-1)); 运行结果 3. Object 全部object的API可以查看https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object ...
JSValue.CreateError(String, JSContext) Method Reference Feedback Definition Namespace: JavaScriptCore Assembly: Xamarin.iOS.dll Creates an error with the provided message, in the provided context. C# 複製 [Foundation.Export("valueWithNewErrorFromMessage:inContext:")] public static JavaScriptCore...