Nodejs String Split splitOnce(regex)

Method Source Code

String.prototype.splitOnce = function (regex) {
    var match = this.match(regex);
    if (match) {//w  w  w  .j a  v a2s.co m
        var match_i = this.indexOf(match[0]);
        return [this.substring(0, match_i),
        this.substring(match_i + match[0].length)];
    } else {
        return [this, ""];
    }
}

Related

1. splitFirst(x)

   String.prototype.splitFirst = function(x){
     var index = this.indexOf(x);
     return [
       this.substring(0, index),
       this.substring(index + x.length)
     ]
   };
   

2. splitLast(separator)

   String.prototype.splitLast = function(separator) {
       var si = this.split(separator);
       var output = [];
       var last = si.pop();
       if (si.length > 0) {
           output.push(si.join(separator));
       if (last) {
           output.push(last);
   ...
   

3. splitLength(size)

   String.prototype.splitLength = function(size) {
       var regex = new RegExp('.{1,' + size + '}', 'g');
       return this.match(regex);
   };
   

4. splitLines(splitOptions = removeEmptyEntries: true, trim: true })

   String.prototype.splitLines = function (splitOptions = { removeEmptyEntries: true, trim: true }) {
       let lines = this.split(/\r?\n/g);
       if (splitOptions && splitOptions.trim) {
           lines = lines.filter(line => line.trim());
       if (splitOptions && splitOptions.removeEmptyEntries) {
           lines = lines.filter(line => line.length > 0);
       return lines;
   ...
   

5. splitOnce(delimiter)

   String.prototype.splitOnce = function (delimiter) {
       var components = this.split(delimiter);
       return [components.shift(), components.join(delimiter)];
   };
   if (!String.prototype.endsWith) {
     String.prototype.endsWith = function(searchString, position) {
         var subjectString = this.toString();
         if (position === undefined || position > subjectString.length) {
             position = subjectString.length;
   ...
   

6. splitStr(delimiter)

   function reverseWords(str) {
     var result = "";
     var wordArray = str.split(" ");
     for (var i = wordArray.length - 1; i >= 0; i--) {
       result += wordArray[i] + " ";
     return result.trim(); 
   String.prototype.splitStr = function (delimiter) {
   ...
   

7. splitWord()

   String.prototype.splitWord = function () {
     return this.split(/(?=[A-Z])/).join(' ');
   };
   

8. splitchunks(s)

   String.prototype.splitchunks = function(s) {
     return s.split(/\n\n+/) 
   

9. splitenum(separator)

   String.prototype.splitenum = function(separator){
       var tokens = this.split(separator);
       var obj = {}
       for (var i=0; i< tokens.length; i++ ){
           obj[i] = tokens[i];
       return obj;