nl2br() 等效于 javascript
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nl2br() equivalent in javascript
提问by X10nD
Possible Duplicate:
jQuery convert line breaks to br (nl2br equivalent)
Currently I add <BR>for each evt.which == 13. Is there a nl2br()for JavaScript, so I can do away with this evt.which == 13?
目前我<BR>为每个evt.which == 13. 是否有nl2br()JavaScript 的，所以我可以取消这个evt.which == 13？
How different is this from php.js
这与 php.js 有何不同
$('#TextArea').keypress(function(evt) {
if (evt.which == 13) {
var range = $('#TextArea').getSelection();
var image_selection = range.text;
$('#TextArea').replaceSelection('<BR>');
$('#TextArea1').html($('#TextArea').val());
}
});
回答by oezi
Take a look at nl2br on php.jswhich seems exactly what you're looking for. Basically, it's:
看看php.js 上的 nl2br，这似乎正是您要找的。基本上，它是：
function nl2br (str, is_xhtml) {
if (typeof str === 'undefined' || str === null) {
return '';
}
var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '<br />' : '<br>';
return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '' + breakTag + '');
}
EDIT:
your example using nl2br()may be changed like this:
编辑：
您使用的示例nl2br()可能会更改为：
$('#TextArea').keypress(function(evt){
$('#TextArea1').html(nl2br($('#TextArea').val()));
});
(note that this updates #TextArea1on every keypress and doesn't change the value of #TextAreawich is what I think you're looking for, but I might be misunderstanding)
（请注意，这会#TextArea1在每次按键时更新，并且不会改变#TextArea我认为您正在寻找的wich的值，但我可能会误解）
EDIT2:
If you want to get the behaviour of your old function (with inserting <br/>s to #TextArea) do this:
EDIT2：
如果您想获得旧函数的行为（插入<br/>s to #TextArea），请执行以下操作：
$('#TextArea').keypress(function(evt){
$('#TextArea').html(nl2br($('#TextArea').val())); // replace linebreaks first
$('#TextArea1').html($('#TextArea').val()); // copy to #TextArea1
});
回答by xdazz
Here is a function nl2brin php.js.
function nl2br (str, is_xhtml) {
// http://kevin.vanzonneveld.net
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Philip Peterson
// + improved by: Onno Marsman
// + improved by: Atli Tór
// + bugfixed by: Onno Marsman
// + input by: Brett Zamir (http://brett-zamir.me)
// + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Brett Zamir (http://brett-zamir.me)
// + improved by: Maximusya
// * example 1: nl2br('Kevin\nvan\nZonneveld');
// * returns 1: 'Kevin<br />\nvan<br />\nZonneveld'
// * example 2: nl2br("\nOne\nTwo\n\nThree\n", false);
// * returns 2: '<br>\nOne<br>\nTwo<br>\n<br>\nThree<br>\n'
// * example 3: nl2br("\nOne\nTwo\n\nThree\n", true);
// * returns 3: '<br />\nOne<br />\nTwo<br />\n<br />\nThree<br />\n'
var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '<br ' + '/>' : '<br>'; // Adjust comment to avoid issue on phpjs.org display
return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '' + breakTag + '');
}
