Save the following code to a .js file or add to an existing one you might have:
function stringHelper() {
this.isNullOrEmpty = function(str) {
if (null == str) return true;
str = this.trim(str);
return str.length == 0;
}
this.trim = function(str, chars) {
return this.ltrim(this.rtrim(str, chars), chars);
}
this.ltrim = function(str, chars) {
chars = chars || "\\s";
return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
this.rtrim = function (str, chars) {
chars = chars || "\\s";
return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}
this.return2br = function (str) {
if (this.isNullOrEmpty(str)) return "";
return str.replace(/(\r\n|\r|\n)/g, "<br />");
}
}
var StringHelper = new stringHelper();
To use, just use the
StringHelper class instance, e.g.
StringHelper.trim(" this is some text ");
