现在二维码很普遍,很多时候都需要把链接或者文字生成一个二维码,所以自己周末就制作了一个二维码在线生成工具,支持大小和颜色的修改,基本能满足平时需要,喜欢的可以收藏使用。
工具地址:http://www.w3cmark.com/tools/ewm.html
github地址:https://github.com/w3cmark/tools
工具截图:
工具源码:
1、调用开放的api(liantu),支持大小、前景色、背景色、嵌入logo等等属性,这里只加入了两个常用的两种,其实想把嵌入logo也加入的,但是要写图片上传功能,就暂时先搁置。
核心代码:
createEwm : function(){ var _this = this, val = _this.text_con.value; if(val == ‘‘){ alert(‘请输入文字内容,支持普通文本和网址!‘) return; }; var fgcolor = document.getElementById(‘fgcolor‘).value, bgcolor = document.getElementById(‘bgcolor‘).value; _this.showEwm(_this.text_con.value,_this.getRadioValue(_this.ewm_size),fgcolor,bgcolor); }, showEwm : function(url,w,fg,bg){ var _this = this; // _this.logo_url = logo ? logo : ‘‘; var api = ‘http://qr.liantu.com/api.php?w=‘+ w +‘&bg=fcfcfc&text=‘+ url +‘&bg=‘+ bg + ‘&fg=‘+ fg, img_html = ‘<img src="‘+ api +‘" />‘; _this.show_ele.innerHTML = img_html; },
2、设置大小,这里只放出了三种尺寸选择,当然也可以做成滑动改变任意尺寸:
核心代码:
getRadioValue : function(obj){ if(obj != null){ var i; for(i=0;i<obj.length;i++){ if(obj[i].checked){ return obj[i].value; } } } return null; }
3、颜色的改变,这个是最复杂的了,需要通过js模拟样色面板(基于jq)
核心代码:
function iColorShow(e, t) { _id = e; var n = jQuery("#" + t).offset(); jQuery("#iColorPicker,#icp_iframe").css({top: n.top + jQuery("#" + e).outerHeight() + "px",left: n.left - 100 + "px",position: "absolute"}).fadeIn("fast"); if (!-[1] && !window.XMLHttpRequest) { jQuery("body,html").css({height: "100%",width: "100%",position: "relative"}); jQuery("#iColorPickerBg").css({position: "absolute",top: 0,left: 0,width: "100%",height: "100%"}).fadeIn("fast") } else { jQuery("#iColorPickerBg").css({position: "fixed",top: 0,left: 0,width: "100%",height: "100%"}).fadeIn("fast") } var r = jQuery("#" + e).val(); jQuery("#colorPreview").css("background", r); jQuery("#color").val(r); var s = jQuery("#iColorPicker"); tempColor = null; jQuery("#colorPreview input").val(r); for (i = 0; i < s.length; i++) { var o = document.getElementById("hexSection" + i); var u = o.childNodes; var a = u.length; for (j = 0; j < a; j++) { var f = u[j].childNodes; var l = f.length; for (k = 0; k < l; k++) { jQuery(u[j].childNodes[k]).click(function() { var hx = jQuery(this).attr("hx"), t = "#" + hx; tempColor = t; jQuery("#icp_" + _id).css("background-color", t); jQuery("#" + _id).val(hx).css("background-color", t); jQuery("#iColorPickerBg").hide(); jQuery("#iColorPicker,#icp_iframe").fadeOut(); // canvasSet(canvasObj, e, t); ewm.createEwm(); jQuery(this) }) } } } jQuery("#colorPreview input").keyup(function() { var e = $(this).val(); if (e.match(/^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/)) { jQuery("#colorPreview").css("background", e); jQuery("#icp_" + _id).val(e).css("background-color", e); // canvasChange(canvasObj, _id, e); jQuery("#" + _id).val(e).css("background", e); // canvasSet(canvasObj, _id, e) } }).keydown(function(e) { return !String.fromCharCode(e.which).match(/[^#0-9A-F\b\x25\x27\x60a-k]/) }) } var tempColor = null; var _id = null; this.iColorPicker = function() { jQuery("input.iColorPicker").each(function(e) { if (e == 0) { jQuery(document.createElement("div")).attr("id", "iColorPicker").css("display", "none").html(‘<table class="pickerTable" id="pickerTable0"><thead id="hexSection0"><tr><td style="background:#f00;" hx="f00"></td><td style="background:#ff0" hx="ff0"></td><td style="background:#0f0" hx="0f0"></td><td style="background:#0ff" hx="0ff"></td><td style="background:#00f" hx="00f"></td><td style="background:#f0f" hx="f0f"></td><td style="background:#fff" hx="fff"></td><td style="background:#ebebeb" hx="ebebeb"></td><td style="background:#e1e1e1" hx="e1e1e1"></td><td style="background:#d7d7d7" hx="d7d7d7"></td><td style="background:#cccccc" hx="cccccc"></td><td style="background:#c2c2c2" hx="c2c2c2"></td><td style="background:#b7b7b7" hx="b7b7b7"></td><td style="background:#acacac" hx="acacac"></td><td style="background:#a0a0a0" hx="a0a0a0"></td><td style="background:#959595" hx="959595"></td></tr><tr><td style="background:#ee1d24" hx="ee1d24"></td><td style="background:#fff100" hx="fff100"></td><td style="background:#00a650" hx="00a650"></td><td style="background:#00aeef" hx="00aeef"></td><td style="background:#2f3192" hx="2f3192"></td><td style="background:#ed008c" hx="ed008c"></td><td style="background:#898989" hx="898989"></td><td style="background:#7d7d7d" hx="7d7d7d"></td><td style="background:#707070" hx="707070"></td><td style="background:#626262" hx="626262"></td><td style="background:#555" hx="555"></td><td style="background:#464646" hx="464646"></td><td style="background:#363636" hx="363636"></td><td style="background:#262626" hx="262626"></td><td style="background:#111" hx="111"></td><td style="background:#000" hx="000"></td></tr><tr><td style="background:#f7977a" hx="f7977a"></td><td style="background:#fbad82" hx="fbad82"></td><td style="background:#fdc68c" hx="fdc68c"></td><td style="background:#fff799" hx="fff799"></td><td style="background:#c6df9c" hx="c6df9c"></td><td style="background:#a4d49d" hx="a4d49d"></td><td style="background:#81ca9d" hx="81ca9d"></td><td style="background:#7bcdc9" hx="7bcdc9"></td><td style="background:#6ccff7" hx="6ccff7"></td><td style="background:#7ca6d8" hx="7ca6d8"></td><td style="background:#8293ca" hx="8293ca"></td><td style="background:#8881be" hx="8881be"></td><td style="background:#a286bd" hx="a286bd"></td><td style="background:#bc8cbf" hx="bc8cbf"></td><td style="background:#f49bc1" hx="f49bc1"></td><td style="background:#f5999d" hx="f5999d"></td></tr><tr><td style="background:#f16c4d" hx="f16c4d"></td><td style="background:#f68e54" hx="f68e54"></td><td style="background:#fbaf5a" hx="fbaf5a"></td><td style="background:#fff467" hx="fff467"></td><td style="background:#acd372" hx="acd372"></td><td style="background:#7dc473" hx="7dc473"></td><td style="background:#39b778" hx="39b778"></td><td style="background:#16bcb4" hx="16bcb4"></td><td style="background:#00bff3" hx="00bff3"></td><td style="background:#438ccb" hx="438ccb"></td><td style="background:#5573b7" hx="5573b7"></td><td style="background:#5e5ca7" hx="5e5ca7"></td><td style="background:#855fa8" hx="855fa8"></td><td style="background:#a763a9" hx="a763a9"></td><td style="background:#ef6ea8" hx="ef6ea8"></td><td style="background:#f16d7e" hx="f16d7e"></td></tr><tr><td style="background:#ee1d24" hx="ee1d24"></td><td style="background:#f16522" hx="f16522"></td><td style="background:#f7941d" hx="f7941d"></td><td style="background:#fff100" hx="fff100"></td><td style="background:#8fc63d" hx="8fc63d"></td><td style="background:#37b44a" hx="37b44a"></td><td style="background:#00a650" hx="00a650"></td><td style="background:#00a99e" hx="00a99e"></td><td style="background:#00aeef" hx="00aeef"></td><td style="background:#0072bc" hx="0072bc"></td><td style="background:#0054a5" hx="0054a5"></td><td style="background:#2f3192" hx="2f3192"></td><td style="background:#652c91" hx="652c91"></td><td style="background:#91278f" hx="91278f"></td><td style="background:#ed008c" hx="ed008c"></td><td style="background:#ee105a" hx="ee105a"></td></tr><tr><td style="background:#9d0a0f" hx="9d0a0f"></td><td style="background:#a1410d" hx="a1410d"></td><td style="background:#a36209" hx="a36209"></td><td style="background:#aba000" hx="aba000"></td><td style="background:#588528" hx="588528"></td><td style="background:#197b30" hx="197b30"></td><td style="background:#007236" hx="007236"></td><td style="background:#00736a" hx="00736a"></td><td style="background:#0076a4" hx="0076a4"></td><td style="background:#004a80" hx="004a80"></td><td style="background:#003370" hx="003370"></td><td style="background:#1d1363" hx="1d1363"></td><td style="background:#450e61" hx="450e61"></td><td style="background:#62055f" hx="62055f"></td><td style="background:#9e005c" hx="9e005c"></td><td style="background:#9d0039" hx="9d0039"></td></tr><tr><td style="background:#790000" hx="790000"></td><td style="background:#7b3000" hx="7b3000"></td><td style="background:#7c4900" hx="7c4900"></td><td style="background:#827a00" hx="827a00"></td><td style="background:#3e6617" hx="3e6617"></td><td style="background:#045f20" hx="045f20"></td><td style="background:#005824" hx="005824"></td><td style="background:#005951" hx="005951"></td><td style="background:#005b7e" hx="005b7e"></td><td style="background:#003562" hx="003562"></td><td style="background:#002056" hx="002056"></td><td style="background:#0c004b" hx="0c004b"></td><td style="background:#30004a" hx="30004a"></td><td style="background:#4b0048" hx="4b0048"></td><td style="background:#7a0045" hx="7a0045"></td><td style="background:#7a0026" hx="7a0026"></td></tr></thead><tbody><tr><td style="border:1px solid #000;background:#fff;cursor:pointer;height:60px;-moz-background-clip:-moz-initial;-moz-background-origin:-moz-initial;-moz-background-inline-policy:-moz-initial;text-align:-ms-center;" colspan="16" align="center" id="colorPreview"><input type="text" maxlength="7" size="8" style="color:#000;border:1px solid rgb(0, 0, 0);padding:5px;background-color:#fff;font:11px Arial, Helvetica, sans-serif;"/></td></tr></tbody></table><style>#iColorPicker input{margin:2px}</style>‘).appendTo("body"); jQuery(document.createElement("div")).attr("id", "iColorPickerBg").click(function() { jQuery("#iColorPickerBg").hide(); if (!-[1]) { setColor(_id) } jQuery("#" + _id).parent().siblings(".close").show(); jQuery("#" + _id).attr("data-color", tempColor); jQuery("#iColorPicker,#icp_iframe").fadeOut() }).appendTo("body"); jQuery("table.pickerTable td").css({width: "12px",height: "14px",border: "1px solid #000",cursor: "pointer"}); jQuery("#iColorPicker table.pickerTable").css({"border-collapse": "collapse"}); jQuery("#iColorPicker").css({border: "1px solid #ccc",background: "#333",padding: "5px",color: "#fff","z-index": 9999}).before(‘<iframe id="icp_iframe" width="253" height="155" scrolling="no" frameborder="0" style="z-index:99;display:none;background:#f00;"></iframe>‘) } jQuery("#colorPreview").css({height: "50px"}); jQuery(this).css("backgroundColor", ‘#‘+jQuery(this).val()).after(‘<div id="icp_‘ + this.id + ‘" class="colorPicker-picker" style="background-color:#‘ + jQuery(this).val() + ‘" onclick="iColorShow(\‘‘ + this.id + "‘,‘icp_" + this.id + "‘);return false;\"></div>") }) };
原理是通过预先定义好的一块颜色面板,当鼠标点击后,把该颜色放到一个隐藏的输入框,生成的时候获取颜色值。不考虑低级浏览器,可以用html5来简单实现。
原文:http://www.cnblogs.com/ljack/p/4109040.html