String substring() 字串切割 字串擷取 | javascript get substring in string
substring()方法跟substr()[1],slice()[2]相似用來切割字串,可以從一段字串中擷取其中的一段,差異在於substring()的兩個參數都不能傳入負數。語法:str.substring(indexStart[,indexEnd])substring()用來擷取兩個索引位置之間的字串,索引位置從0開始。參數indexStart是一個數字表示要從哪個位置開始擷取參數indexEnd是一個數字表示要擷取到哪個位置之前為止,預設取到字串結尾結果會返回一個新字串substring()還有一個特別的地方在於,如果indexStart比indexEnd還大時,效果就像這兩個參數位置互換一樣。例如:str.substring(1,0)=...
substring() 方法跟 substr()[1], slice()[2] 相似用來切割字串,可以從一段字串中擷取其中的一段,差異在於 substring() 的兩個參數都不能傳入負數。
語法:
str.substring(indexStart[, indexEnd])substring() 用來擷取兩個索引位置之間的字串,索引位置從 0 開始。
參數 indexStart 是一個數字表示要從哪個位置開始擷取參數 indexEnd 是一個數字表示要擷取到哪個位置之前為止,預設取到字串結尾結果會返回一個新字串substring() 還有一個特別的地方在於,如果 indexStart 比 indexEnd 還大時,效果就像這兩個參數位置互換一樣。例如:str.substring(1, 0) === str.substring(0, 1)。
用法:
var str = fooish.com; // 輸出 foo console.log(str.substring(0, 3)); console.log(str.substring(3, 0)); // 輸出 sh. console.log(str.substring(4, 7)); console.log(str.substring(7, 4)); // 輸出 fooish console.log(str.substring(0, 6)); // 輸出 fooish.com console.log(str.substring(0, 10)); console.log(str.substring(0, 20)); console.log(str.substring(100, 0)); 最後更新: 2020-02-06 勘誤回報[3]References substr() (www.fooish.com) slice() (www.fooish.com) 勘誤回報 (docs.google.com)取得本站獨家住宿推薦 15%OFF 訂房優惠
javascript substring indexof javascript lastindexof javascript string length java substring javascript string javascript substring javascript substring用法 javascript substr slice 螢幕豆沙色win10 田野 菜單 紫禁城附近美食 農16特區 房價 北台灣最大ikea 瑞瑪席丹三圍 租車 PTT 評價 NG餅乾 批發 宜蘭員山公車 越南台商徵才
本站住宿推薦 20%OFF 訂房優惠,親子優惠,住宿折扣,限時回饋,平日促銷
Get Substring between two characters using javascript | javascript get substring in string
2014年12月17日 — string.substr(SP); var TP = string1.length + string2.indexOf(sub2); ... Read More
How can I cut a substring from a string to the end using ... | javascript get substring in string
12 年前 — You can use indexOf and substr to get the sub-string you want: //using a string variable set to the URL you want to pull info from //this ... Read More
How do I get a substring from a string in JavaScript? | javascript get substring in string
1 年前 — To find a substring in a string in JavaScript, you can use the indexOf() method. The indexOf() method returns the first occurrence of the ... Read More
How to Check Whether a String Contains a Substring in ... | javascript get substring in string
1 年前 — You can use JavaScript's includes() method to check whether a string contains a substring. This will return true if the substring is found, or ... Read More
JavaScript String includes() Method | javascript get substring in string
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, ... Read More
JavaScript String substr() Method | javascript get substring in string
The substr() method extracts a part of a string. The substr() method begins at a specified position, and returns a specified number of characters. The substr() ... Read More
JavaScript String substr() Method | javascript get substring in string
Definition and Usage ... The substr() method extracts parts of a string, beginning at the character at the specified position, and returns the specified number of ... Read More
JavaScript String substring() Method | javascript get substring in string
The substring() method extracts characters, between two indices (positions), from a string, and returns the substring. The substring() method extracts ... Read More
JavaScript String substring() Method | javascript get substring in string
Definition and Usage ... The substring() method extracts the characters from a string, between two specified indices, and returns the new sub string. This method ... Read More
JavaScript Substring Method | javascript get substring in string
6 個月前 — JavaScript substring() is a String method that is typically used to extract and store part of a string. During the extraction, the original ... Read More
JavaScript Substring() | javascript get substring in string
Introduction to the JavaScript substring() method ... The substring() method accepts two parameters: startIndex and endIndex : ... If you omit the endIndex , the ... Read More
String substring() 字串切割 字串擷取 | javascript get substring in string
2020年2月6日 — JavaScript String substring() ... substring() 方法跟substr(), slice() 相似用來切割字串,可以從一段字串中擷取其中的一段,差異在於substring() 的兩個 ... Read More
String.prototype.substr() | javascript get substring in string
8 個月前 — A string's substr() method extracts length characters from the string, counting from the start index. ... Although you are encouraged to avoid ... Read More
String.prototype.substr() | javascript get substring in string
2021年5月5日 — The substr() method returns a portion of the string, starting at the specified index and extending for a given number of characters afterwards. Read More
String.prototype.substring() | javascript get substring in string
9 個月前 — The substring() method of String values returns the part of this string from the start index up to and excluding the end index, or to the ... Read More
String.prototype.substring() | javascript get substring in string
2021年5月5日 — The substring() method returns the part of the string between the start and end indexes, or to the end of the string. Read More
String.prototype.substring() - JavaScript | javascript get substring in string
substring() 方法返回一个字符串在开始索引到结束索引之间的一个子集, 或从开始索引直到字符串的末尾的一个子集。 ... 下面一个例子运用了 String.length 属性去获取指定字符串的倒数元素。显然这个办法更 ... Find out how you can help! (en-US). Read More
訂房住宿優惠推薦
17%OFF➚