consttext="JavaScript is a versatile language. Learning JavaScript makes you a powerful developer.";functionstringSearch(text,term){if(text.includes(term)){console.log(`"${term}" found in string.`);}else{console.log(`"${term}" not found in string.`);}constindex=text.indexOf(term);conso...
20.2 String.lastIndexOf() 20.3 String.search() 20.4 String.match() 20.5 String.includes() 20.6 String.startsWith() 20.7 String.endsWith() 20 JavaScript 字符串搜索 用于搜索字符串的 JavaScript 方法: String.indexOf() String.lastIndexOf() String.startsWith() String.endsWith() 20.1 String.index...
In JavaScript, the syntax for the search() method is: string.search(search_expression); Parameters or Arguments search_expression It is either a string value or a RegExp object that will be searched for instring. As a RegExp object, it can be a combination of the following: ...
search() is method 是一個 String 方法,用於檢查給定字符串中是否存在子字符串。它從子字符串所在的字符串返回子字符串的起始索引。如果字符串中不存在子字符串 – 則返回 -1。 用法: String.search(substring); 這裏,substring是要搜索的字符串的一部分。 例: JavaScipt Example var str = "friends say H...
string1.search(regExp)executes the search and returns11which is the index value of the match found i.e.'JavaScript1'. Example 2: Passing non-regExp in search() letstring1 ="I love to code in JavaScript."; // searching word "JavaScript" in the given stringletindex = string1.search(...
JavaScript String match() Thematch()method returns an array containing the results of matching a string against a string (or a regular expression). Examples Perform a search for "ain": lettext ="The rain in SPAIN stays mainly in the plain"; ...
string.search search()方法执行正则表达式和String对象之间的一个搜索匹配。 语法 代码语言:javascript 复制 str.search(regexp) 参数 regexp一个正则表达式(regular expression)对象。如果传入一个非正则表达式对象,则会使用 new RegExp(obj) 隐式地将其转换为正则表达式对象。
If the specified regexp is not found in the original string, the search() method returns -1.The following is another example of the JavaScript String search() method. In this example, we use this method to match the regexp '/Hi/' in the original string "Hello World".Open Compiler ...
log(myString.replace(new RegExp( "999", "gi" ), "The")); //output: The JavaScript Coders 9. search(regexp) search() 方法用于检索字符串中指定的子字符串,或检索与正则表达式相匹配的子字符串,如果找到,返回与 regexp 相匹配的子串的起始位置,否则返回 -1。 代码语言:javascript 代码运行次数:0...
String search() and String match() Thesearch()method returns the position of the first match. Thematch()method returns an array of matches. Regular Expression Search Methods In JavaScript, a regular expression text search, can be done with different methods. ...