| Article Introduction: Gets the height of the page 's viewable area, gets the page height, and gets the page height of the scroll bar scrolling up. |
function Getwh () {var wh = {}; "Height Width". Replace (/[^\s]+/g,function (a) {var b = a.tolowercase (); wh[b]=window["inner". Concat (a)] Document.compatmode = = "Css1compat" && document.documentelement["Client". Concat (a)] document.body["Client" . Concat (a)]; }); return WH; Understanding two nouns: Backcompat standard compatibility mode shutdown (weird mode) Css1compat standard compatibility Mode This method is to get the height of the visible area of the page, in general, Window.innerheight can be obtained, if normal mode, And in the case of ClientHeight, the document.documentElement.clientHeight gets the visual area height. In weird mode, it is obtained using document.body.
function Getbodywh () {var wh = {}; "Height Width". Replace (/[^\s]+/g,function (a) {var b = a.tolowercase (); Wh[b]=document.compatmode = = "Css1compat" & & document.documentelement["scroll". Concat (a)] document.body["scroll". Concat (a)]; }); return WH; This is used to obtain the height of the page for the adaptive time of the IFRAME.
var ss = {}; SS.SCROLLTOPFN = function (arg) {var a = Navigator.userAgent.toLowerCase (). indexof ("WebKit");/to Judge WebKit kernel var scrolltop ; if (A>-1document.compatmode = = "Backcompat") {THIS.SCROLLTOPFN =function (ARG) {if (typeof arg = = ' number ') { Document.body.scrollTop = arg; }else{return Document.body.scrollTop}} }else{this.scrolltopfn =function (ARG) {if (typeof arg = = ' number ') {document.documentElement.scrollTop = arg;} else{return Document.documentElement.scrollTop}} Return this.scrollTopFn.apply (this,arguments); This return scrolltop is the height of the page scrolling up, because in the WebKit kernel rendering is using the body, so and the above two judgments are not the same. In weird mode, it's also with body. All other cases are used documentelment. These things are very annoying, today made a day to sum up all these, online search also did not find a special standard of the argument, one after another try to write a few functions for later use. If someone has a better way of judging, but also hope to inform, thank you!
