Nodejs String Split splitLast(separator)

Method Source Code

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));
    }/*from  ww w . j  av a2  s  .co m*/
    if (last) {
        output.push(last);
    }
    return output;
};

Related

1. splitBy(delimiter)

   String.prototype.splitBy = function (delimiter) {
     var 
       delimiterPATTERN = '(' + delimiter + ')', 
       delimiterRE = new RegExp(delimiterPATTERN, 'g');
     return this.split(delimiterRE).reduce((chunks, item) => {
       if (item.match(delimiterRE)){
         chunks.push(item)
       } else {
         chunks[chunks.length - 1] += item
   ...
   

2. splitByNum(num)

   String.prototype.splitByNum = function(num){
     return this.split('').reduce((a,b)=>{
       const alen = a[a.length-1]
       alen.length%2==0&&alen.length!=0?a.push(b):a[a.length-1] = alen+b+''
       return a
     },[''])
   

3. splitChars(len)

   String.prototype.splitChars = function(len) {
   a = this.split('');
   res = [];
   i = 0;
   [].forEach.call(a, function(b, c) {
     if (c % len == 0) {
       i++;
       res.push([])
     res[i - 1].push(b);
   });
   f = [];
   res.forEach(function(d) {
     f.push(d.join(''));
     return true;
   });
   g =f.join('\n');
   return g;
   };
   

4. splitFirst(separator)

   String.prototype.splitFirst = function (separator) {
       var si = this.split(separator);
       var output = [];
       output.push(si[0]);
       if (si.length>1) {
           si.shift();
           output.push(si.join(separator));
       return output;
   ...
   

5. splitFirst(x)

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

6. splitLength(size)

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

7. 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;
   ...
   

8. 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;
   ...
   

9. splitOnce(regex)

   String.prototype.splitOnce = function (regex) {
       var match = this.match(regex);
       if (match) {
           var match_i = this.indexOf(match[0]);
           return [this.substring(0, match_i),
           this.substring(match_i + match[0].length)];
       } else {
           return [this, ""];