Show line Wrap in textarea

TextArea Line Change

TextArea is saved to the MySQL database when using inline editing in the DataGrid in Easyui \ n
Enter a return character in the textarea the value in the JS read textarea has \ r \ n then to the business layer conversion to string is likely to become a space form and then be stored in the database, when this value is taken out of the form of space, so we need to not show the \ r \ n Replace.

When JS takes the textarea:

If you use

var str = document.getelementbyidx_x_x ("textarea"). Value;
str = str.replace ("\ r \ n", "<br>");

Only the first \ r \ n is replaced with <br>, how to replace all n \ r \ NAND <br>. Do you want to have an unlimited replace?

In fact, replace can be combined with regular expressions, replacing all \ r \ n at once.

var reg=new RegExp ("\ r \ n", "G");
Str= str.replace (Reg, "\ r \ n");

So all of the \ r \ n in STR is replaced with <br>. You can then save it to the database.

You can only replace the value when you remove it.

var reg=new RegExp ("<br>", "G");
stt= str.replace (Reg, "\ r \ n");
Document.getelementbyidx_x_x ("textarea"). Value=str;

More detailed analysis and application can refer to the JavaScript of the Replace method and regular expressions combined with the application of the explanation

Here are 2 functions I wrote directly into the generic package for later use to replace

function ReplaceTextarea1 (str) {
var reg=new RegExp ("\ r \ n", "G");
var reg1=new RegExp ("", "G");

str = str.replace (Reg, "<br>");
str = str.replace (REG1, "<p>");

return str;
}


function ReplaceTextarea2 (str) {
var reg=new RegExp ("<br>", "G");
var reg1=new RegExp ("<p>", "G");

str = str.replace (Reg, "\ r \ n");
str = str.replace (REG1, "");

return str;
}

2. HTML in-Pass

The content submitted by the label will turn the carriage return to "\ r \ n", and then put the submitted content into

When displayed in the label, the carriage return reverts to the normal line break. However, when a string with "\ r \ n" is displayed in the normal text field of the HTML, the original wrapping effect is changed to a space, so you need to replace "\ r \ n" in the string with ". In addition, it is important to note that the El expression converts the newline character to "," < ">" correspond to "<" and ">" respectively, that is to say, on the page, or show as "" (Hehe, El Intelligent degree is too high), in order to remedy this, You need to use JSP tags (