javascript方法

function fireEvent(element, event) {
                if (document.createEventObject) {
                    var evt = document.createEventObject();
                    return element.fireEvent('on' + event, evt)
                } else {
                    var evt = document.createEvent("HTMLEvents");
                    evt.initEvent(event, true, true)
                    return !element.dispatchEvent(evt);
                }
  }

　　

function filterHTML(source) {
 return !source ? "" : source.replace(/</?[^>]*>/g, "").replace(/[ | ]*
/g, "
"). replace(/
[s| | ]*
/g, "
").replace(/ /ig, "")
 }