const str = 'arya stark';// The most concise way to check substrings ignoring case is using// `String#match()` and a case-insensitive regular expression (the 'i')str.match(/Stark/i); // truestr.match(/Snow/i); // false// You can also convert both the string and the search st...
The toLowerCase() method returns the string converted to lowercase. Example const message = "JAVASCRIPT IS FUN"; // convert message to lowercase const lowerMessage = message.toLowerCase(); console.log(lowerMessage); // Output: javascript is fun Run Code toLowerCase() Syntax The syntax ...
letresult = text.toLowerCase(); Try it Yourself » Description ThetoLowerCase()method converts a string to lowercase letters. ThetoLowerCase()method does not change the original string. See Also: The toUpperCase() Method The toLocaleLowerCase() Method ...
ThepadStart()method is a string method. To pad a number, convert the number to a string first. See the example below. Example letnumb =5; lettext = numb.toString(); letpadded = text.padStart(4,"0"); Try it Yourself » Browser Support ...
在JavaScript中,可以使用字符串的toUpperCase()和toLowerCase()方法将字符串转换为大写或小写。如果要将字符串转换为大小写混合,可以使用循环遍历字符串的每个字符,并根据索引位置决定将字符转换为大写还是小写。 以下是一个示例代码: 代码语言:txt 复制 function convertToMixedCase(str) { let result = ''; for ...
The toUpperCase() method returns the string converted to uppercase. Example const message = "javascript is fun"; // convert message to uppercase const upperMessage = message.toUpperCase(); console.log(upperMessage); // Output: JAVASCRIPT IS FUN Run Code toUpperCase() Syntax The syntax of ...
function (name) { let sex; const pet = { // 在这个上下文中:setName(newName) 等价于 setName: function (newName) setName(newName) { name = newName; }, getName() { return name; }, getSex() { return sex; }, setSex(newSex) { if ( typeof newSex === "string" && (newSex...
Name String.toLocaleLowerCase() — convert a string to lowercase Synopsis string.toLocaleLowerCase() Returns A copy ofstring, converted to lowercase letters in a locale-specific way. Only a few languages, such as Turkish, have locale-specific case mappings, so this method usually returns the same...
const convert2Obj = compose(genObj('name'), capitalizeName) 它实际上就完成了映射关系的组合,把一个数据从 String 转换成了 String 然后再转换成 Object。数学好的童鞋就知道,这就是数学上的复合运算:g°f = g(f(x)) 在我们的编程世界中,我们需要处理的其实也只有“数据”和“关系”,而关系就是函数。
The toLowerCase() method is used to converts a string to lowercase.VersionImplemented in JavaScript 1.0 SyntaxtoLowerCase()ParameterNoneExample:In the following web document toLowerCase() method convert a given string to lowercase.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"...