在javascript中修剪和修改值 [英] Trim &nbsp values in javascript

问题描述

我正在尝试修剪我从kendo编辑器获得的文本。

I am trying to trim the text which I get from kendo editor like this.

var html = "  T  "; // This sample text I get from Kendo editor
            console.log("Actual :" + html + ":");
            var text = "";
            try {
                // html decode
                var editorData = $('<div/>').html(html).text();
                text = editorData.trim();                    
                console.log("After trim :" + text + ":");
            }
            catch (e) {
                console.log("exception");
                text = html;
            }

此代码位于单独的js文件中（从typescript生成）。当页面加载时，修剪不起作用。但是，当我在开发人员工具控制台窗口中运行相同的代码时，它的工
为什么不工作？

This code is in seperate js file ( generated from typescript). When the page loads the trimming is not working. But when I run the same code in developer tools console window its working. Why it is not working?

添加打字稿代码

 const html: string = $(selector).data("kendoEditor").value();
        console.log("Actual :" + html + ":");
        let text: string = "";
        try {
            // html decode
            var editorData = $('<div/>').html(html).text();
            text = editorData.trim();
            console.log("After trim :" + text + ":");
        }
        catch (e) {
            console.log("exception");
            text = html;
        }

推荐答案

& nbsp; 成为非休息空间角色， \ u00a0 。 JavaScript的 String＃修剪 是 假设删除那些，但历史上浏览器实现在这方面有点麻烦。我认为这些问题已经在现代问题上得到了解决，但是...

  becomes a non-break-space character, \u00a0. JavaScript's String#trim is supposed to remove those, but historically browser implementations have been a bit buggy in that regard. I thought those issues had been resolved in modern ones, but...

如果你正在遇到没有实现它的浏览器正确地说，你可以用正则表达式解决这个问题：

If you're running into browsers that don't implement it correctly, you can work around that with a regular expression:

text = editorData.replace(/(?:^[\s\u00a0]+)|(?:[\s\u00a0]+$)/g, '');

这表示在开头和结尾都没有替换所有空格或非空格字符。

That says to replace all whitespace or non-break-space chars at the beginning and end with nothing.

但看到你的评论后：

当我运行这段代码时另外，它对我来说很好。但是在应用程序中失败了。

When I run this piece of code separately, it is working fine for me. But in application its failing.

...可能不是它。

或者，您可以在转换为文字前删除& nbsp; 标记：

Alternately, you could remove the   markup before converting to text:

html = html.replace(/(?:^(?: )+)|(?:(?: )+$)/g, '');
var editorData = $('<div/>').html(html).text();
text = editorData.trim();    

删除任何& nbsp; s在将标记转换为文本之前的开头或结尾。

That removes any  s at the beginning or end prior to converting the markup to text.

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