Alternatively, if you're performing this check regularly, you can add a new indexOf()-like method to String, but make it case insensitive. String.prototype.indexOfInsensitive = function (s, b) { return this.toLowerCase().indexOf(s.toLowerCase(), b); } // Then invoke it if (referre...
2. 内容过滤:在处理文本内容时,检测是否包含敏感词、非法字符或特定关键词,以进行内容审核、自动标记或过滤。 function containsProfanity(text) { const profanities = ["swearword1", "swearword2", "etc."]; return profanities.some(word => text.includes(word)); } const message = "This message contai...
conststr="Hello, World!";constsearchValue="world";if(str.toLowerCase().includes(searchValue.toLowerCase())){console.log(`${searchValue}is found (case-insensitive).`);} 2. 从指定位置开始查找:虽然includes()本身不支持从指定索引开始查找,但可以通过截取子字符串实现类似效果。 conststr="Hello, ...
12 How to check for string equality case insensitive in xsl 8 XPath to find an element whose attribute contains a text, case-insensitively? 18 xpath lowercase - Is there xpath function to do this? 0 Case-insensitive XPath node matching in JavaScript 0 Is there a way to ignore case ...
“undefined”:如果这个值未定义 “boolean”:如果这个值是布尔值 “number”:如果这个值是数值 “string”:如果这个值是字符串 “object”:如果这个值是对象或者null “function”:如果这个值是函数调用typeof null会返回"object",因为特殊值 null 被认为是一个空的对象引用...
To check for case insensitive string contains, use the regular expressions. Add suffix “i” after the string regular expression as shown. var actualstring = "Javascript Regular Exp"; var regexp = "javascript"; /regexp/i.test(actualstring); //returns true ...
i: (case-insensitive) 表示不区分大小写模式 m: (multiline)表示多行模式,即在文本的末尾时会继续查找下一行是否存在于模式匹配的项 2.2.2 不同点 构造函数和工厂符号除了相差一个new关键字外没有什么不同,但是不推荐工厂符号的形式创建正则表达式。下面主要说一下字面量和构造函数的形式创建正则...
gThe pattern should be appliedglobally (i.e., to every instance of the pattern in a string) iThe pattern iscase-insensitive mEach physical line of the target string is treated as the start of a string If you have been exposed to regular expressions in the past,Table 1-1lists the regula...
String substr() See Also: String Search Methods String Templates String toUpperCase() String toLowerCase() String concat() String trim() String trimStart() String trimEnd() String padStart() String padEnd() String repeat() String replace() ...
Perform a global, case-insensitive search for "ain": lettext ="The rain in SPAIN stays mainly in the plain"; text.match(/ain/gi); Try it Yourself » Note If a regular expression does not include thegmodifier (global search),match()will return only the first match in the string. ...