Replace Without Considering Uppercase/Lowercase ThereplaceAll()method is case sensitive. To perform the case-insensitive replacement, you need to use a regex with aiswitch (case-insensitive search). Example 2: Case-Insensitive Replacement consttext ="javaSCRIPT JavaScript";// all occurrences of javas...
consttext ="Java is awesome. Java is fun."// notice the g switch in the regex patternconstpattern =/Java/g;constnew_text = text.replace(pattern,"JavaScript");console.log(new_text); 输出 JavaScript is awesome. JavaScript is fun. 在这里,replace()方法将两次出现的Java替换为JavaScript。 替换...
Replicate PHPstr_replace()Function in JavaScript to Replace a String JavaScript Code: functionstr_replace($searchString,$replaceString,$message){// We create regext to find the occurrencesvarregex;// If the $searchString is a stringif(typeof($searchString)=='string'){// Escape all the char...
通过string.Intern(string)方法主动添加驻留池。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 string st1="123"+"abc";string st2="123abc";string st3=st2.Substring(0,3); 代码语言:javascript 代码运行次数:0 运行 AI代码解释 看看上面代码生成的IL代码: 常量的字符串"123" + "abc"连接被编译器...
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);/...
輸出 string before replacement:Hello world! string after replacement:Hi world! String replace() Method with Example in JavaScript。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。
letnewText = text.replace(/Microsoft/g,"W3Schools"); Try it Yourself » Note You will learn a lot more about regular expressions in the chapterJavaScript Regular Expressions. JavaScript String ReplaceAll() In 2021, JavaScript introduced the string methodreplaceAll(): ...
{13returnthis.replace(/{(.*?)}/g,function(all, key) {14//我们把方法的参数都打印出来,看看结果是什么15for(vari=0; i<arguments.length; i++) {16console.log(arguments[i]+'');17}18returnjson&&(keyinjson)?json[key] :"";19});20}2122window.onload=function() {23vartemplate="我的名字...
JavaScript String Methods JavaScript String Search Browser Support replace()is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers: ChromeEdgeFirefoxSafariOperaIE YesYesYesYesYesYes ❮PreviousJavaScript StringReferenceNext❯ ...
此方法调用的 str.replaceAll(regex, repl) 形式产生与以下表达式完全相同的结果: Pattern.compile(regex).matcher(str).replaceAll...另外,如果replaceAll()和replaceFirst()所用的参数据不是基于规则表达式的,则与replace()替换字符串的效果是一样的,即这两者也支持字符串的操作; 用正则表达式仅仅是替换全部或替换第...