问题描述
我正在为网站后端的文本输入工作。我想要一些事情自动纠正。例如,textarea中的新行我转换为< br>
。我还想让用户选中新行。
I'm working on a text input for the backend of a website. I want a couple things to be automatically corrected. Example, new lines in the textarea I convert to <br>
. I also want to let the user tab over on new lines.
这需要将空格更改为& nbsp;
。我只想转换位于新行开头的空格。例如,假设用户将其键入textarea:
This requires changing spaces over to
. I only want to convert spaces that are at the start of a new line though. Example, say the user types this into a textarea:
This is my text! It's pretty great.
This is a second line.
This is a third line, that is indented by four spaces.
This is a fourth line.
使用正则表达式,我获得了每行转换的第一个空格:
Using regex, I've gotten the first space on each line to convert:
.replace(/^[ ]/mg,' ');
我有多个空格可以转换为一个空格:
I've gotten multiple spaces to convert to one space:
.replace(/[ ]{2,}/mg,' ');
我无法弄清楚如何转换所有这四个缩进空格。我已经在互联网上搜索了大约3个小时,我找到了类似的答案,但我没办法在这里工作。有什么想法?
I can't figure out how to convert all four of those indenting spaces though. I've been scouring the internet for about 3 hours, and I've found similar answers, but nothing that I could get to work here. Any thoughts?
推荐答案
function escapeSpaces(str) {
var regex = /^ +/mg;
return str.replace(regex, function (match) {
var result = "";
for (var i = 0, len = match.length; i < len; i++) {
result += " ";
}
return result;
});
}
这可能不是最佳解决方案,但可行。
This may not be the best solution, but it works.
或者:
function escapeSpaces (str) {
return str.replace(/^ +/mg, function (match) {
return match.replace(/ /g, " ");
});
}
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