stringObject.search(regexp) 1. 2. 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。它会返回第一个匹配的子字符串的起始位置,如果没有匹配的,则返回-1。 var str = 'abcDEF'; console.log(str.search('c')); //返回2 console.log(str.search('d')); //返回-1...
If a regular expression does not include thegmodifier (global search),match()will return only the first match in the string. Read more about regular expressions in the chapterJS RegExp. JavaScript String matchAll() ThematchAll()method returns an iterator containing the results of matching a st...
JS Math Functions JS Array Methods This JavaScript tutorial explains how to use the string method called search() with syntax and examples. Description In JavaScript, search() is a string method that is used to search for a specific string or regular expression. Because the search() method is...
JavaScript String search() Method const str = "Welcome to Tutorials Point"; document.write("Original String: ", str); let regexp = /point/i; document.write("regexp: ", regexp); document.write("The sub-string '", regexp, "' found at position ",str.search(regexp)); ...
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. ...
可以使用String作为toString()更可靠的代替方法,因为它在用于null和undefined时仍然有效。例如: js constnullVar=null;nullVar.toString();// TypeError: nullVar is nullString(nullVar);// "null"constundefinedVar=undefined;undefinedVar.toString();// TypeError: undefinedVar is undefinedString(undefinedVar);/...
js string方法中的match,replace和search方法 match中也可用正则 返回的是数组 var str="i love you, i love you"; str.match(/love/);//只返回一个love str.match(/love/g);// /love/g后面的g是全局匹配,这时就返回两个love的数组 同理 str.replace(/love/g,"hate");//把全部love换成hate ,...
search() 方法用于在 String 对象中执行正则表达式的搜索,寻找匹配项。 尝试一下语法 jsCopy to Clipboard search(regexp) 参数 regexp 一个正则表达式对象,或者具有 Symbol.search 方法的任意对象。 如果regexp 不是RegExp 对象,并且不具有 Symbol.search 方法,则会使用 new RegExp(regexp) 将其隐式转换为 ...
2)search() 该方法接受一个正则表达式或者字符串作为参数,从字符串开头向后查找。 格式:str.search(pattern); 功能:根绝匹配规则pattern在字符串中检索指定的结果,如果检索到则返回该结果首字母在原字符中的索引,否则返回-1。其功能类似于indexOf,只是indexOf并不支持正则匹配。
Search results jsesc Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data. buffer escape javascript json map set string stringify tool mathias •3.1.0•3 months ago•2,054dependents•MITpublished version3.1.0,3 months ago2054dependents...