JS实现全半角转换和去空格

来源：互联网发布：立即获取淘宝联盟pid 编辑：程序博客网时间：2024/06/01 08:14

最近在写开题报告，发现PDF中的文字复制出来会各种凌乱：标点全半角不定、各种空格莫名其妙的多。太影响复制粘贴了。

用js写了个解决问题的办法，基本就是用正则表达式替换。为了能方便的加入新标点转换，做了一下结构上的优化。

<html><!-- trim all the spaces in input, and make the punctuations in right case--><head><meta charset="UTF-8"><script type="text/javascript"src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script><script type="text/javascript">$(function(){//bind events$('#format').click(format);$('#clear').click(clear);});//replace strategyfunction Strategy(reg, rep){this[this.REG] = reg;this[this.REP] = rep;}Strategy.prototype.REG = 0;Strategy.prototype.REP = 1;//replace utilsfunction change(p1, p2, mapping){return p1 + mapping[p2];}function getRegOf(word, mapping){var str = '';for (var i in mapping){str += '\\' + i;}return new RegExp('(' + word + ')([' + str + '])', 'g');}// DBC to SBC casefunction en2cnChange(){var args = arguments;return change(args[1], args[2], en2cnChange.prototype.mapping.mapping);}en2cnChange.prototype.mapping = {mapping : {'\,': '，','\.': '。','\;': '；','\!': '！'},reg: function(){if(this._reg == undefined){//initial oncethis._reg = getRegOf('\\W', this.mapping);}return this._reg;}}//SBC to DBC casefunction cn2enChange(){var args = arguments;return change(args[1], args[2], cn2enChange.prototype.mapping.mapping);}cn2enChange.prototype.mapping = {mapping : {'，': '\,','。': '\.','；': '\;','！': '\!'},reg: function(){if(this._reg == undefined){//initial oncethis._reg = getRegOf('\\w', this.mapping);}return this._reg;}}// event handlerfunction format(){var str = $('#input').val();var reg = Strategy.prototype.REG;var rep = Strategy.prototype.REP;var strategies = format.prototype.strategies;for(var i in strategies){var strategy = strategies[i]; str = str.replace(strategy[reg], strategy[rep]);} $('#output').val(str);}format.prototype.strategies = [new Strategy(en2cnChange.prototype.mapping.reg(), en2cnChange),new Strategy(cn2enChange.prototype.mapping.reg(), cn2enChange),new Strategy(/\s/g, function(){return ''})// whtie space];function clear(){$('textarea').each(function(){$(this).val('')});}</script><style type="text/css">textarea{display: inline-block;width: 45%;height:80%;margin: 1em;}</style></head><textarea id="input" placeholder="input"></textarea><textarea id="output" placeholder="output"></textarea><br/><button id="format">format</button><button id="clear">clear</button></html>