javascript文本模板用法实例

/*class*/StringTemplate = function (/* Optional {patt: RegExp, clPatt: RegExp}*/pattern) {  if (!!pattern) {    this.patt = pattern.patt;    this.clPatt = pattern.clPatt;  } else {    this.patt = /%/{/s*[/w/-]+/s*/}/g;    this.clPatt = /(^%/{/s*)|(/s*/}$)/g;  }  this.format = function(val, map) {    var ls = [];    var res;    var prevEnd = 0;    while ((res = this.patt.exec(val)) != null) {      var va = res[0];      var start = val.substr(prevEnd, res.index - prevEnd);      prevEnd = res.index + va.length;      ls.push(start);      var vac = va.replace(this.clPatt, "");      ls.push(map[vac]);    }    ls.push(val.substr(prevEnd, val.length));    return ls.join("");  }}

var str = new StringTemplate().format("你好%{userName }, 欢迎再次登陆%{systemName}",{userName: "小明", systemName: "jb51"});//str="你好小明, 欢迎再次登陆jb51";