contains() 方法确定一个字符串是否包含另一个字符串: string.includes(searchString[,position]) 如果在字符串中找到 searchString,includes() 方法返回 true;否则为false。 可选的position参数指定string中开始搜索 searchString 的位置。po...
通常,只需使用 char 文本而无需使用字符串文本即可解决规则问题。 代码语言:javascript 复制 publicboolContainsLetterI(){vartestString="I am a test string.";returntestString.Contains("I");}Public FunctionContainsLetterI()As Boolean Dim testString As String="I am a test string."Return testString.Co...
1functionisContains(str, substr) {2returnstr.indexOf(substr) >= 0;3} str为源字符串; substr为查找的字符; 返回true代表包含,false代表不包含。
代码语言:javascript 复制 str.includes(searchString[,position]) 参数 searchString要在此字符串中搜索的字符串。 position可选。从当前字符串的哪个索引位置开始搜寻子字符串;默认值为0。 返回值 如果当前字符串包含被搜寻的字符串,就返回true;否则,返回false。
How do you check if one string contains a substring in JavaScript?Craig Buckler
let str3 = 'JavaScript';if (str3.includes('Script')) { alert(`The string "${str3}" contains "Script".`);} else { alert(`The string "${str3}" does not contain "Script".`);} 五、注意事项 1、includes()方法区分大小写。2、如果搜索字符串为空,则返回true。3、如果指定的起始位置...
1, contains(); 返回值为boolean类型 Stringa="szrfrrgdhjd"; a.contains("g") 里面包含,所以返回true 2, indexOf(); 返回的是一个int类型,通常和substring()一起用 Stringa="qwertyu"; a.indexOf("e");他返回的是int类型的2,就是说e在字符串a中的第2个位置 ...
String[]array={"Java","Python","C++","JavaScript"};Stringtarget="Python";booleanfound=false;for(Stringstr:array){if(str.contains(target)){found=true;break;}}if(found){System.out.println("数组中包含字符串 "+target);}else{System.out.println("数组中不包含字符串 "+target);} ...
To check if a Javascript String Contains a substring or not, we can use 7 different Javascript methods as listed in below table.
where searchWords.Contains(org.OrgName) ; Friday, June 5, 2009 1:05 PM Well, I'm searching the database for user input: 複製 searchString = "XXX Alliance"; //User input DataContext db = new DataContext(); var query = from org in db.Organizations where org.OrgName.Contains(search...