A simple method of realizing waterfall flow with JS sharing

A simple method of realizing waterfall flow with JS sharing _javascript skills

Last Update:2017-01-19 Source: Internet

Author: User

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Here is a way to use JS to achieve waterfall flow, look at criticism.

Copy Code code as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title> Waterfall Flow Layout test </title>
<style>
Body {
Background-color: #eee;
font-size:84%;
text-align:justify;
}
. column {
Display:inline-block;
Vertical-align:top;
}
. pic_a {
Display:block;
padding:5px;
margin-bottom:10px;
border:1px solid #ccc;
Background-color: #fff;
Text-decoration:none;
}
. pic_a img {
Display:block;
margin:0 Auto 5px;
border:0;
Vertical-align:bottom;
}
. pic_a Strong {
Color: #333;
}
</style>

<body>
<div id= "Container" ></div>
<script>
var waterfall = {
Container:document.getElementById ("container"),
Columnnumber:1,
columnwidth:210,
P_001.jpg ~ p_160.jpg
Rootimage: "test/",
indeximage:0,

ScrollTop:document.documentElement.scrollTop | | Document.body.scrollTop,
detectleft:0,

Loadfinish:false,

Returns a fixed-format picture name
Getindex:function () {
var index = this.indeximage;
if (Index < 10) {
index = "+" + index;
else if (Index < 100) {
index = "0" + index;
}
return index;
},

Whether to scroll load detection
Appenddetect:function () {
var start = 0;
for (start; start < This.columnnumber; start++) {
var elecolumn = document.getElementById ("Waterfallcolumn_" + start);
if (Elecolumn &&!this.loadfinish) {
if (Elecolumn.offsettop + elecolumn.clientheight < This.scrolltop + (Window.innerheight | | Document.documentElement.clientHeight)) {
This.append (Elecolumn);
}
}
}

return this;
},

Scroll load
Append:function (column) {
This.indeximage + 1;
var html = ', index = This.getindex (), Imgurl = This.rootimage + "P_" + index + ". jpg";

Picture size
var Aele = document.createelement ("a");
Aele.href = "###";
Aele.classname = "Pic_a";
aele.innerhtml = ' <strong> ' + index + ' </strong> ';
Column.appendchild (Aele);

if (index >= 160) {
Alert ("Picture loaded with light!") ");
This.loadfinish = true;
}

return this;
},

Page Load Initial creation
Create:function () {
This.columnnumber = Math.floor (document.body.clientwidth/this.columnwidth);

var start = 0, Htmlcolumn = ', self = this;
for (start; start < This.columnnumber; start+=1) {
Htmlcolumn = Htmlcolumn + ' <span id= ' waterfallcolumn_ ' + start + ' class= ' column ' style= ' width: ' + this.columnwidth + ' px ;" > ' +
function () {
var html = ', i = 0;
For (i=0 i<5; i+=1) {
Self.indeximage = start + Self.columnnumber * i;
var index = Self.getindex ();
html = html + ' <a href= ' ### ' class= ' pic_a ' ><strong> ' + index + ' </strong></a> ';
}
return HTML;
}() +
' </span> ';
}
Htmlcolumn + = ' <span id= ' waterfalldetect ' class= ' column ' style= ' width: ' + this.columnwidth + ' px; ></span> ';

This.container.innerHTML = Htmlcolumn;

This.detectleft = document.getElementById ("Waterfalldetect"). offsetleft;
return this;
},

Refresh:function () {
var arrhtml = [], arrtemp = [], Htmlall = ', start = 0, maxLength = 0;
for (start; start < This.columnnumber; start+=1) {
var arrcolumn = document.getElementById ("Waterfallcolumn_" + start). Innerhtml.match (/<a (?:. | \n|\r|\s) *?a>/gi);
if (arrcolumn) {
MaxLength = Math.max (MaxLength, arrcolumn.length);
Arrtemp is a two-dimensional array
Arrtemp.push (Arrcolumn);
}
}

reordering required
var lengthstart, Arrstart;
for (Lengthstart = 0; lengthstart<maxlength; lengthstart++) {
for (Arrstart = 0; arrstart<this.columnnumber; arrstart++) {
if (Arrtemp[arrstart][lengthstart]) {
Arrhtml.push (Arrtemp[arrstart][lengthstart]);
}
}
}

if (arrhtml && arrhtml.length!== 0) {
Number of new columns
This.columnnumber = Math.floor (document.body.clientwidth/this.columnwidth);

Calculate the number of rows per column
Rounding down
var line = Math.floor (Arrhtml.length/this.columnnumber);

Re-assemble HTML
var newstart = 0, Htmlcolumn = ', self = this;
for (Newstart; Newstart < This.columnnumber; newstart+=1) {
Htmlcolumn = Htmlcolumn + ' <span id= ' waterfallcolumn_ ' + Newstart + ' "class=" column "style=" width: ' + this.columnwidth + ' px; ' > ' +
function () {
var html = ', i = 0;
For (i=0 i<line; i+=1) {
HTML + + Arrhtml[newstart + self.columnnumber * i];
}
Whether to complement the remainder
HTML = html + (Arrhtml[newstart + self.columnnumber * Line] | | '');

return HTML;
}() +
' </span> ';
}
Htmlcolumn + = ' <span id= ' waterfalldetect ' class= ' column ' style= ' width: ' + this.columnwidth + ' px; ></span> ';

This.container.innerHTML = Htmlcolumn;

This.detectleft = document.getElementById ("Waterfalldetect"). offsetleft;

Detection
This.appenddetect ();
}
return this;
},

Scrolling load
Scroll:function () {
var self = this;
Window.onscroll = function () {
To improve performance, roll before and after the distance greater than 100 pixel processing
var scrolltop = Document.documentElement.scrollTop | | Document.body.scrollTop;
if (!this.loadfinish && math.abs (scrolltop-self.scrolltop) > 100) {
Self.scrolltop = scrolltop;
Self.appenddetect ();
}

};
return this;
},

browser window Size transform
Resize:function () {
var self = this;
Window.onresize = function () {
var eledetect = document.getElementById ("Waterfalldetect"), Detectleft = Eledetect && eledetect.offsetleft;
if (Detectleft && math.abs (detectleft-self.detectleft) > 50) {
Detect label offset exception, think layout to change
Self.refresh ();
}
};
return this;
},
Init:function () {
if (This.container) {
This.create (). Scroll (). resize ();
}
}
};
Waterfall.init ();
</script>
</body>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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