摘要: ``` function getBase64Image(img) { var canvas = document.createElement("canvas"); canvas.width = img.width; canvas.height = img.height; var ctx = canvas.getContext("2d"); ctx.drawI... 阅读全文
posted @ 2019-02-12 21:34 曾志呀 阅读(448) 评论(0) 推荐(0)
摘要: $$ \mathbf{V}_1 \times \mathbf{V}_2 = \begin{vmatrix} \mathbf{i} & \mathbf{j} & \mathbf{k} \\ \frac{\partial X}{\partial u} & \frac{\partial Y}{\parti 阅读全文
posted @ 2018-12-24 17:25 曾志呀 阅读(117) 评论(0) 推荐(0)
摘要: 如下: function codePointLength(text){ var result = text.match(/[\s\S]/gu); return result? result.length:0; } var s = '𠮷𠮷'; s.length //4 codePointLength(s) //2 阅读全文
posted @ 2018-12-24 11:32 曾志呀 阅读(611) 评论(0) 推荐(0)
摘要: html片段: js片段: 全局过滤器: 组件本地过滤: 结果: 岳麓区岳麓大道588号(湖南省长沙市) ///括号变红色 html: js: 效果: 阅读全文
posted @ 2018-12-06 11:37 曾志呀 阅读(641) 评论(0) 推荐(0)
摘要: //原始数据var arr = [ { "id": 1, "name": 'zengzhi', "age": 25 }, { "id": 1, "name": 'longlu', "age": 20 }, { "id": 2, "name": 'zengzhi2', "age": 25 }, ]; /... 阅读全文
posted @ 2018-12-04 17:47 曾志呀 阅读(2100) 评论(1) 推荐(1)