-HTML5 example of character effect in Word

Using HTML5 to achieve word effects in words

Implementation idea: Output text with canvas, then analyze pixels, and output text based on pixel points.

Core code:

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var canvas;var ctx;var tex;var blankStr = "  ";//输出空白$(function () {    $("button#bt").click(function () {//绑定按钮单击事件        if ($("canvas#myCanvas").length > 0) {            canvas = $("canvas#myCanvas")[0];            ctx = canvas.getContext("2d");        }        var tex = $("input#inpt").val();//获取输入框文字        if (!tex) tex = "顶";//默认文字为"顶"        if (tex.length > 1) { //只支持一个汉字            alert("亲，少输入点字好吧，我吃不消呢~");            return;        }        var reg = /[\u4E00-\u9FA5]/g;//用正则表达式判断是否为汉字        if (!reg.test(tex)) {            alert("亲，输入一个汉字好吧，其他的我不认识呢~");            return;        }         ctx.fillStyle = "rgba(0,0,0,1)";//绘制底色        ctx.fillRect(20, 20, 40, 40);

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ctx.fillStyle = "rgba(255,255,255,1)"//绘制文字        ctx.font = "bolder 40px 宋体";        ctx.textBaseline = ‘top‘;        ctx.fillText(tex, 20, 20);        var panel = $("#panel");//汉字输出区域        panel.html("");//清空历史汉字        for (y = 1; y < 40; y++) {            for (x = 1; x < 40; x++) {                imageData = ctx.getImageData(20 + x, 20 + y, 1, 1);//获取灰度像素值                if (imageData.data[0] >180 ) {    //0为黑，255为白，取180是为了调控精度，确保不同浏览器都能有良好效果                    panel.html(panel.html() + blankStr);                } else {                    panel.html(panel.html() + tex);                }            }            panel.html(panel.html() + "<br>");        }    });    $("button#bt").click();//第一次加载是输出"顶"});

View instance: http://jialiren.sinaapp.com/

-HTML5 example of character effect in Word