jString.js/jstring.js at master · justJavaScript/jString.js · GitHub

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// ( 1 ) String.contains()

String.prototype.contains = function(text){

if(text == '') return true;

else if(text == null) return false;

else return this.indexOf(text) !== -1;

}

// ( 2 ) String.count()

String.prototype.count = function(text){

if(this.contains(text))

return this.split(text).length-1;

else

return 0;

}

// ( 3 ) String.capitalize()

String.prototype.capitalize = function(){

if(this == '') return this;

else return this.charAt(0).toUpperCase() + this.slice(1).toLowerCase();

}

// ( 4 ) String.trim()

String.prototype.trim = function(){

return this.replace(/^\s+|\s+$/g, '');

}

// ( 5 ) String.leftTrim()

String.prototype.leftTrim =function(){

return this.replace(/^\s+/,'');

}

// ( 6 ) String.rightTrim()

String.prototype.rightTrim=function(){

return this.replace(/\s+$/,'');

}

// ( 7 ) String.clear()

String.prototype.clear = function(){

return this.replace(/^\s+|\s+$/g, '').replace(/\s+/g, ' ');

}

// ( 8 ) String.startsWith()

String.prototype.startsWith = function(start) {

if(start == '') return true;

else if(start == null || start.length > this.length) return false;

else return this.substring(0,start.length) == start;

}

// ( 9 ) String.endsWith()

String.prototype.endsWith = function(end) {

if(end == '') return true;

else if(end == null || end.length > this.length) return false;

else return this.indexOf(end, this.length - end.length) !== -1;

}

// ( 10 ) String.insert()

String.prototype.insert = function(text,at) {

if(at == null || at > this.length)

at = this.length;

else if(at < 0)

at = 0;

return this.substring(0,at)+text+this.substring(at);

}

jString.js/jstring.js at master · justJavaScript/jString.js · GitHub

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