在今天的本教程中,我们学习了如何使用 JavaScript String includes()方法来确定一个字符串是否包含另一个字符串。 如果你还想学习更多字符串的内容,请点击下文链接进行学习。 【JavaScript 教程】第五章 字符串10— slice():提取字符串的...
1, contains(); 返回值为boolean类型 Stringa="szrfrrgdhjd"; a.contains("g") 里面包含,所以返回true 2, indexOf(); 返回的是一个int类型,通常和substring()一起用 Stringa="qwertyu"; a.indexOf("e");他返回的是int类型的2,就是说e在字符串a中的第2个位置 如果有多个e的话,始终返回的是第一...
To check if a string contains substring or not, use the Javascript match method. Javascript match method accepts a regular expression as a parameter and if the string contains the given substring it will return an object with details of index, substring, input, and groups. ...
How do you check if one string contains a substring in JavaScript?Craig Buckler
这里的字符串查找是说判断一个字符串是否包含另一个字符串。用到的方法为indexOf,跟java不一样,不是contains,我个人在这个问题上出过错,所以还是要谨记。 用法为strObj.indexOf(subString[, startIndex]),这里strObj是要判断的字符串,startIndex是可选的,表示查找的开始位置(基于0的索引),如果startIndex省略,则...
代码语言:javascript 复制 1 /*substring(startIndex,endIndex)获取部分字符串 2 截取 起始索引startIndex 到 结束索引endIndex的子字符串, 3 结果包含startIndex处的字符,不包含endIndex处的字符。 4 */ 5 console.log('substring用法') 6 //获取av 7 myString="JavaScript"; 8 console.log(myString.substrin...
string:要匹配的字符串 substr:子字符串 isIgnoreCase:是否忽略大小写 function contains(string, substr, isIgnoreCase) { if (isIgnoreCase) { string = string.toLowerCase(); substr = substr.toLowerCase(); } var startChar = substr.substring(0, 1); ...
JavaScript String substring() substring()is similar toslice(). The difference is that start and end values less than 0 are treated as 0 insubstring(). Example letstr ="Apple, Banana, Kiwi"; letpart = str.substring(7,13); Try it Yourself » ...
命名空間: NUnit.Framework 組件: MonoTouch.NUnitLite.dll C# 複製 public static NUnit.Framework.Constraints.SubstringConstraint Substring (string expected); 參數 expected String 傳回 SubstringConstraint 適用於 產品版本 Xamarin iOS SDK 12
Only one of the strings contains the required substring. If the example is run on the .NET Framework 4 or later, in both cases, because the soft hyphen is an ignorable character, the method returns the index of "m" in the string. Note that in the case of the first string, which ...