Method 2: Case Insensitive String Comparison Using toUpperCase() and toLowerCase() Method The most used approaches for comparing case insensitive strings are toUpperCase() method or toLowerCase() Method. They convert the strings into uppercase or lowercase and then compare them with the help of ...
function caseInsensitiveCompare(str1, str2) { return str1.localeCompare(str2, undefined, { sensitivity: 'base' }) === 0; } let str1 = "Hello"; let str2 = "hello"; if (caseInsensitiveCompare(str1, str2)) { console.log("Strings are equal, ignoring case."); } else { console.lo...
var areEqual = string1.toUpperCase() === string2.toUpperCase();
toLowerCase()andtoUpperCase()can be used to do case insensitive comparison: 1234 vars="endmemo";alert(s.toLowerCase()=="endmemo");//truealert(s.toUpperCase()=="ENDMEMO");//truealert(s.toUpperCase()=="endmemo");//false match()method can be used for string containment comparison, return...
JS array sort strings case insensitive To compare strings in a case insensitive manner, we call thetoLowerCasefunction on the compared elements. main.js let words = ["world", "War", "abbot", "Caesar", "castle", "sky", "den",
为什么会这样呢?因为sort不会直接比较数字类型,而已转为string了再做的比较。那么我们想要比较数字怎办?我们可以往sort传函数,例: function mycompare(o1, o2) { return o1 - o2;//如果为正数则o1大,负数则o2大,零则相等。 } var arr2 = [5, 14, 23, 12, 1]; alert(arr2.sort(mycompare)); ...
referenceStr.localeCompare(compareString[, locales[, options]]) 判断字符串参数compareString是否在字母表中排在字符串referenceStr之前,是的话返回正数,不是返回负数,相等返回0。 locales和options都是可选参数,还没有被所有浏览器支持,具体的含义可以查阅文档。
五种基本数据类型(Undefined, Null, Boolean, Number, String)的值即基本类型值是按值访问的, 因此操作的是保存在变量中实际的值 引用类型值是保存在内存中的对象,ES不允许直接访问内存中的位置, 即不能直接操作对象的内存空间. 在操作对象时, 实际上是在操作对象的引用而不是实际的对象. ...
Case Insensitive String Compare function ValidateCases() { var user1 = document.getElementById("txtUser").value; if (user1.toLowerCase() == "Welcome".toLowerCase()) alert("Welcome matched"); else alert("Access Denied!"); } JavaScript Copy *toLowerCase()- Convert string to lowercase....
conststrings=['Alpha','Zeta','alpha','zeta'];strings.sort((str1,str2)=>str1.localeCompare(str2,undefined,{sensitivity:'accent'}));// Case insensitive sorting: ['Alpha', 'alpha', 'Zeta', 'zeta']strings; 不使用正则表达式 您可能很想使用正则表达式和 JavaScript 正则表达式来比较两个字符串...