javascript 在javascript中将 & 替换为 & ， <lt 到 < 和 >gt 到 gt

replace &amp to & , <lt to < and >gt to gt in javascript

提问by rafat

I want to replace &ampto &using javascript. Here is the sample code of mine.EmployeeCode could contain &. The EmployeeCode is selected from Datagrid and its showed in "txtEmployeeCode" textbox. But if the EmployeeCode contains any &then it shows &ampinto the textbox. How could &ampbe removed from EmployeeCode? can anyone help...

我想替换&amp为&使用 javascript。这是我的示例代码。EmployeeCode 可以包含 &。EmployeeCode 是从 Datagrid 中选择的，它显示在“txtEmployeeCode”文本框中。但是，如果 EmployeeCode 包含任何内容，&则它会显示&amp在文本框中。如何&amp从 EmployeeCode 中删除？谁能帮忙...

function closewin(EmployeeCode) {
     opener.document.Form1.txtEmployeeCode.value = EmployeeCode;
     this.close();
}

回答by Edgar Villegas Alvarado

With this:

有了这个：

function unEntity(str){
   return str.replace(/&amp;/g, "&").replace(/&lt;/g, "<").replace(/&gt;/g, ">");
}

function closewin(EmployeeCode) {
     opener.document.Form1.txtEmployeeCode.value = unEntity(EmployeeCode);
     this.close();
}

OPTIONALIf you are using jQuery, this will decode any html entity (not only &<and >):

可选如果您使用的是 jQuery，这将解码任何 html 实体（不仅是&<和>）：

function unEntity(str){
   return $("<textarea></textarea>").html(str).text();
}

Cheers

干杯

回答by MultiplyByZer0

Try this:

试试这个：

var str = "&";
var newstring = str.replace(/&/g, "&");

For more information, see MDN's documentation.

有关更多信息，请参阅MDN 的文档。

回答by Jorg

In case you don't want to replace all of those html entities, you can cheat with this:

如果你不想替换所有这些 html 实体，你可以用这个作弊：

var div = document.createElement('textarea');
div.innerHTML = "bla&bla"
var decoded = div.firstChild.nodeValue;

your converted value is now in decoded

您的转换价值现在在 decoded

see Decode &amp; back to & in JavaScript

见解码 & 回到 & 在 JavaScript 中

回答by bjb568

A regex-abuse-free method:

一种无正则表达式滥用的方法：

 function closewin(EmployeeCode) {
      opener.document.Form1.txtEmployeeCode.value = EmployeeCode.split('&amp').join('&');
      this.close();
 }