未加星标

Word to color

字体大小 | |
[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二04 | 时间 2017 | 作者 红领巾 ] 0人收藏点击收藏

I had to write some code today to convert words into colors, which was a lot of fun. I liked it so such I had to put a working example online.

The code is a simple function. How it works:

We have three channels: red, green, and blue. Iterate over the word, with the first character adding to red, the second to green, and the third to blue. This continues for the whole word. Add the Unicode value of the character to a sum. Each time you add a new letter, multiply the value by a multiplier. This multiplier starts at 1 and is multiplied by 11 every time you go through three letters. Mod each sum by 256 to get the channel value. function colorHash(str) { var mul = 1; var sums = [0, 0, 0]; var i; if (str.length === 0) { return [255, 255, 255] } for (i = 0; i < str.length; i++) { sums[i % 3] += (str.charCodeAt(i) * mul); if (i == 2) { mul *= 11; } } for (i = 0; i < 3; i++) { sums[i] = sums[i] % 256; } return sums; } function toRGBA(sums, alpha) { var rgba = "rgba("; rgba += sums.map(function (x) { return x.toString() }).join(",") rgba += "," + alpha + ")"; return rgba; }

本文前端(javascript)相关术语:javascript是什么意思 javascript下载 javascript权威指南 javascript基础教程 javascript 正则表达式 javascript设计模式 javascript高级程序设计 精通javascript javascript教程

主题: Word
分页:12
转载请注明
本文标题:Word to color
本站链接:http://www.codesec.net/view/533458.html
分享请点击:


1.凡CodeSecTeam转载的文章,均出自其它媒体或其他官网介绍,目的在于传递更多的信息,并不代表本站赞同其观点和其真实性负责;
2.转载的文章仅代表原创作者观点,与本站无关。其原创性以及文中陈述文字和内容未经本站证实,本站对该文以及其中全部或者部分内容、文字的真实性、完整性、及时性,不作出任何保证或承若;
3.如本站转载稿涉及版权等问题,请作者及时联系本站,我们会及时处理。
登录后可拥有收藏文章、关注作者等权限...
技术大类 技术大类 | 前端(javascript) | 评论(0) | 阅读(29)