Nodejs String Contains contains(string)

Here you can find the source of contains(string)

Method Source Code

String.prototype.contains = function(string) {
    return this.indexOf(string) > -1;
};

Related

  1. contains(str, ignoreCase)
    String.prototype.contains = function(str, ignoreCase) {
        return (ignoreCase ? this.toUpperCase() : this)
                .indexOf(ignoreCase ? str.toUpperCase() : str) >= 0;
    };
    String.prototype.startsWith = function(str) {
        return this.indexOf(str) == 0;
    };
    
  2. contains(str, index)
    String.prototype.contains = function(str, index) {
      return (this.indexOf(str, index) !== -1) ? true : false;
    
  3. contains(str,startIndex)
    String.prototype.contains = function(str,startIndex) {
        return -1 !== String.prototype.indexOf.call(this,str,startIndex);
    };
    
  4. contains(strPattern)
    String.prototype.contains = function(strPattern){
      if(typeof strPattern !== 'string') return false;
      var pattern = new RegExp(strPattern, "i");
      return pattern.test(this);
    console.log("teste".contains("teste"));
    
  5. contains(string)
    String.prototype.contains = function(string) {
      return (this.indexOf(string) != -1);
    
  6. contains(string, index)
    String.prototype.contains = function (string, index) {
      return this.indexOf(string, index) !== -1;
    };
    
  7. contains(string, index)
    String.prototype.contains = function (string, index) {
      return this.indexOf(string, index) !== -1;
    };
    
  8. contains(stringSet)
    String.prototype.contains = function(stringSet) {
      for (var i=0;i<stringSet.length;i++) {
         if (this.indexOf(stringSet[i]) >= 0)
            return true;
      return false;
    };
    
  9. contains(strings, index)
    String.prototype.contains = function(strings, index) {
      if(!Array.isArray(strings)) throw Error('1 argument is not an array');
      return strings.some(string => this.includes(string, index), this);