How To Compare Two Strings In Javascript Ignoring Case When searching or sorting text, it is common to disregard the letter case to ensure consistent results. In this article, we will explore different techniques to perform case-insensitive string comparisons in JavaScript, providing you with the ...
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...
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", "forest", "ocean", "water", "falcon", "owl", "rain...
varmyString ="Hello 1 word. Sentence number 2.";varsplits = myString.split(/(\d)/);// \d匹配数字console.log(splits);// [ "Hello ", "1", " word. Sentence number ", "2", "." ] localeCompare()方法 referenceStr.localeCompare(compareString[, locales[, options]]) 判断字符串参数c...
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)); ...
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);/...
function case_insensitive_comp(strA, strB) { return strA.toLowerCase().localeCompare(strB.toLowerCase()); } var str = 'ACBacbA'; // split the string in chunks str = str.split(""); // sorting str = str.sort(); str = str.sort( case_insensitive_comp ) // concatenate the chunks...
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...
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....
i:表示不区分大小写(case-insensitive)模式,即在确定匹配项是忽略模式与字符串的大小写; m:表示多行(multiline)模式,即在到达一行文本末尾时,还会继续查找下一行中是否存在与模式匹配的项。 模式中所有的元字符必须转义。需要转义的元字符有: ()[]{}\^$|?*+. ...