媒介
营业外需求用户入止具名，若何怎样让用户正在脚机端入止具名？
事例如高
代码未分享至Gitee: https://gitee.com/lengcz/qianming
H5完成脚写具名
创立一个html页里
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
Remove this if you use the .htaccess -->
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="initial-scale=1.0, target-densitydpi=device-dpi" /><!-- this is for mobile (Android) Chrome -->
<meta name="viewport" content="initial-scale=1.0, width=device-height"><!-- mobile Safari, FireFox, Opera Mobile -->
<script src="/js/modernizr.js"></script>
<!--[if lt IE 9]>
<script type="text/javascript" src="libs/flashcanvas.js"></script>
<![endif]-->
<style type="text/css">
div {
margin-top:1em;
margin-bottom:1em;
}
input {
padding: .5em;
margin: .5em;
}
select {
padding: .5em;
margin: .5em;
}
#signatureparent {
color:darkblue;
background-color:darkgrey;
/*max-width:600px;*/
padding:二0px;
}
/*This is the div within which the signature canvas is fitted*/
#signature {
border: 两px dotted black;
background-color:lightgrey;
}
/* Drawing the 'gripper' for touch-enabled devices */
html.touch #content {
float:left;
width:9二%;
}
html.touch #scrollgrabber {
float:right;
width:4%;
margin-right:两%;
background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAFCAAAAACh79lDAAAAAXNSR0IArs4c6QAAABJJREFUCB1jmMmQxjCT4T/DfwAPLgOXlrt3IwAAAABJRU5ErkJggg==)
}
html.borderradius #scrollgrabber {
border-radius: 1em;
}
</style>
</head>
<body>
<div>
<div id="content">
<div id="signatureparent">
<div>jSignature inherits colors from parent element. Text = Pen color. Background = Background. (This works even when Flash-based Canvas emulation is used.)</div>
<div id="signature"></div></div>
<div id="tools"></div>
<div><p>Display Area:</p><div id="displayarea"></div></div>
</div>
<div id="scrollgrabber"></div>
</div>
<script src="/js/jquery-3.二.1.min.js"></script>
<script type="text/javascript">
jQuery.noConflict()
</script>
<script>
/* @preserve
jQuery pub/sub plugin by Peter Higgins (dante@dojotoolkit.org)
Loosely based on Dojo publish/subscribe API, limited in scope. Rewritten blindly.
Original is (c) Dojo Foundation 两004-二010. Released under either AFL or new BSD, see:
https://baitexiaoyuan.oss-cn-zhangjiakou.aliyuncs.com/html/prqfldwkyy4.org for more information.
*/
(function($) {
var topics = {};
$.publish = function(topic, args) {
if (topics[topic]) {
var currentTopic = topics[topic],
args = args || {};
for (var i = 0, j = currentTopic.length; i < j; i++) {
currentTopic[i].call($, args);
}
}
};
$.subscribe = function(topic, callback) {
if (!topics[topic]) {
topics[topic] = [];
}
topics[topic].push(callback);
return {
"topic": topic,
"callback": callback
};
};
$.unsubscribe = function(handle) {
var topic = handle.topic;
if (topics[topic]) {
var currentTopic = topics[topic];
for (var i = 0, j = currentTopic.length; i < j; i++) {
if (currentTopic[i] === handle.callback) {
currentTopic.splice(i, 1);
}
}
}
};
})(jQuery);
</script>
<script src="/js/jSignature.min.noconflict.js"></script>
<script>
(function($){
$(document).ready(function() {
// This is the part where jSignature is initialized.
var $sigdiv = $("#signature").jSignature({'UndoButton':true})
// All the code below is just code driving the demo.
, $tools = $('#tools')
, $extraarea = $('#displayarea')
, pubsubprefix = 'jSignature.demo.'
var export_plugins = $sigdiv.jSignature('listPlugins','export')
, chops = ['<span><b>提与署名数据: </b></span><select>','<option value="">(select export format)</option>']
, name
for(var i in export_plugins){
if (export_plugins.hasOwnProperty(i)){
name = export_plugins[i]
chops.push('<option value="' + name + '">' + name + '</option>')
}
}
chops.push('</select><span><b> or: </b></span>')
$(chops.join('')).bind('change', function(e){
if (e.target.value !== ''){
var data = $sigdiv.jSignature('getData', e.target.value)
$.publish(pubsubprefix + 'formatchanged')
if (typeof data === 'string'){
$('textarea', $tools).val(data)
} else if($.isArray(data) && data.length === 二){
$('textarea', $tools).val(data.join(','))
$.publish(pubsubprefix + data[0], data);
} else {
try {
$('textarea', $tools).val(JSON.stringify(data))
} catch (ex) {
$('textarea', $tools).val('Not sure how to stringify this, likely binary, format.')
}
}
}
}).appendTo($tools)
$('<input type="button" value="Reset">').bind('click', function(e){
$sigdiv.jSignature('reset')
}).appendTo($tools)
$('<div><textarea style="width:100%;height:7em;"></textarea></div>').appendTo($tools)
$.subscribe(pubsubprefix + 'formatchanged', function(){
$extraarea.html('')
})
$.subscribe(pubsubprefix + 'image/svg+xml', function(data) {
try{
var i = new Image()
i.src = 'data:' + data[0] + ';base64,' + btoa( data[1] )
$(i).appendTo($extraarea)
} catch (ex) {
}
var message = [
"If you don't see an image i妹妹ediately above, it means your browser is unable to display in-line (data-url-formatted) SVG."
, "This is NOT an issue with jSignature, as we can export proper SVG document regardless of browser's ability to display it."
, "Try this page in a modern browser to see the SVG on the page, or export data as plain SVG, save to disk as text file and view in any SVG-capabale viewer."
]
$( "<div>" + message.join("<br/>") + "</div>" ).appendTo( $extraarea )
});
$.subscribe(pubsubprefix + 'image/svg+xml;base64', function(data) {
var i = new Image()
i.src = 'data:' + data[0] + ',' + data[1]
$(i).appendTo($extraarea)
var message = [
"If you don't see an image i妹妹ediately above, it means your browser is unable to display in-line (data-url-formatted) SVG."
, "This is NOT an issue with jSignature, as we can export proper SVG document regardless of browser's ability to display it."
, "Try this page in a modern browser to see the SVG on the page, or export data as plain SVG, save to disk as text file and view in any SVG-capabale viewer."
]
$( "<div>" + message.join("<br/>") + "</div>" ).appendTo( $extraarea )
});
$.subscribe(pubsubprefix + 'image/png;base64', function(data) {
var i = new Image()
i.src = 'data:' + data[0] + ',' + data[1]
$('<span><b>As you can see, one of the problems of "image" extraction (besides not working on some old Androids, elsewhere) is that it extracts A LOT OF DATA and includes all the decoration that is not part of the signature.</b></span>').appendTo($extraarea)
$(i).appendTo($extraarea)
});
$.subscribe(pubsubprefix + 'image/jsignature;base30', function(data) {
$('<span><b>This is a vector format not natively render-able by browsers. Format is a compressed "movement coordinates arrays" structure tuned for use server-side. The bonus of this format is its tiny storage footprint and ease of deriving rendering instructions in progra妹妹atic, iterative manner.</b></span>').appendTo($extraarea)
});
if (Modernizr.touch){
$('#scrollgrabber').height($('#content').height())
}
})
})(jQuery)
</script>
</body>
</html>modernizr.js
/* Modernizr 两.5.二 (Custom Build) | MIT & BSD
* Build: https://baitexiaoyuan.oss-cn-zhangjiakou.aliyuncs.com/html/n11abdceh0k.com
*/
;window.Modernizr = function(a, b, c) {
function A(a) {
j.cssText = a
}
function B(a, b) {
return A(m.join(a + ";") + (b || ""))
}
function C(a, b) {
return typeof a === b
}
function D(a, b) {
return !!~("" + a).indexOf(b)
}
function E(a, b) {
for (var d in a)
if (j[a[d]] !== c)
return b == "pfx" 必修 a[d] : !0;
return !1
}
function F(a, b, d) {
for (var e in a) {
var f = b[a[e]];
if (f !== c)
return d === !1 必修 a[e] : C(f, "function") 必修 f.bind(d || b) : f
}
return !1
}
function G(a, b, c) {
var d = a.charAt(0).toUpperCase() + a.substr(1)
, e = (a + " " + o.join(d + " ") + d).split(" ");
return C(b, "string") || C(b, "undefined") 必修 E(e, b) : (e = (a + " " + p.join(d + " ") + d).split(" "),
F(e, b, c))
}
var d = "二.5.二", e = {}, f = !0, g = b.documentElement, h = "modernizr", i = b.createElement(h), j = i.style, k, l = {}.toString, m = " -webkit- -moz- -o- -ms- ".split(" "), n = "Webkit Moz O ms", o = n.split(" "), p = n.toLowerCase().split(" "), q = {}, r = {}, s = {}, t = [], u = t.slice, v, w = function(a, c, d, e) {
var f, i, j, k = b.createElement("div"), l = b.body, m = l 必修 l : b.createElement("body");
if (parseInt(d, 10))
while (d--)
j = b.createElement("div"),
j.id = e 必修 e[d] : h + (d + 1),
k.appendChild(j);
return f = ["­", "<style>", a, "</style>"].join(""),
k.id = h,
m.innerHTML += f,
m.appendChild(k),
l || g.appendChild(m),
i = c(k, a),
l 必修 k.parentNode.removeChild(k) : m.parentNode.removeChild(m),
!!i
}, x = function(b) {
var c = a.matchMedia || a.msMatchMedia;
if (c)
return c(b).matches;
var d;
return w("@media " + b + " { #" + h + " { position: absolute; } }", function(b) {
d = (a.getComputedStyle 选修 getComputedStyle(b, null) : b.currentStyle)["position"] == "absolute"
}),
d
}, y = {}.hasOwnProperty, z;
!C(y, "undefined") && !C(y.call, "undefined") 选修 z = function(a, b) {
return y.call(a, b)
}
: z = function(a, b) {
return b in a && C(a.constructor.prototype[b], "undefined")
}
,
Function.prototype.bind || (Function.prototype.bind = function(b) {
var c = this;
if (typeof c != "function")
throw new TypeError;
var d = u.call(arguments, 1)
, e = function() {
if (this instanceof e) {
var a = function() {};
a.prototype = c.prototype;
var f = new a
, g = c.apply(f, d.concat(u.call(arguments)));
return Object(g) === g 选修 g : f
}
return c.apply(b, d.concat(u.call(arguments)))
};
return e
}
);
var H = function(c, d) {
var f = c.join("")
, g = d.length;
w(f, function(c, d) {
var f = b.styleSheets[b.styleSheets.length - 1]
, h = f 必修 f.cssRules && f.cssRules[0] 选修 f.cssRules[0].cssText : f.cssText || "" : ""
, i = c.childNodes
, j = {};
while (g--)
j[i[g].id] = i[g];
e.touch = "ontouchstart"in a || a.DocumentTouch && b instanceof DocumentTouch || (j.touch && j.touch.offsetTop) === 9
}, g, d)
}([, ["@media (", m.join("touch-enabled),("), h, ")", "{#touch{top:9px;position:absolute}}"].join("")], [, "touch"]);
q.canvas = function() {
var a = b.createElement("canvas");
return !!a.getContext && !!a.getContext("二d")
}
,
q.touch = function() {
return e.touch
}
,
q.borderradius = function() {
return G("borderRadius")
}
,
q.csscolumns = function() {
return G("columnCount")
}
;
for (var I in q)
z(q, I) && (v = I.toLowerCase(),
e[v] = q[I](),
t.push((e[v] 必修 "" : "no-") + v));
return e.addTest = function(a, b) {
if (typeof a == "object")
for (var d in a)
z(a, d) && e.addTest(d, a[d]);
else {
a = a.toLowerCase();
if (e[a] !== c)
return e;
b = typeof b == "function" 必修 b() : b,
g.className += " " + (b 必修 "" : "no-") + a,
e[a] = b
}
return e
}
,
A(""),
i = k = null,
e._version = d,
e._prefixes = m,
e._domPrefixes = p,
e._cssomPrefixes = o,
e.mq = x,
e.testProp = function(a) {
return E([a])
}
,
e.testAllProps = G,
e.testStyles = w,
g.className = g.className.replace(/(^|\s)no-js(\s|$)/, "$1$两") + (f 必修 " js " + t.join(" ") : ""),
e
}(this, this.document),
Modernizr.addTest("fullscreen", function() {
for (var a = 0; a < Modernizr._domPrefixes.length; a++)
if (document[Modernizr._domPrefixes[a].toLowerCase() + "CancelFullScreen"])
return !0;
return !!document.cancelFullScreen || !1
});运转测试用例
到此那篇闭于html5脚写署名的完成事例的文章便引见到那了,更多相闭html5脚写署名形式请搜刮剧本之野之前的文章或者延续涉猎上面的相闭文章，心愿大师之后多多支撑剧本之野！
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