在应用程序的特定视图中打开iPhone网页网址(Have iPhone webpage URL open in specific view in application)

var $txtName = $('#emoteName'),
    $txtUrl = $('#emoteURL'),
    $txtUsage = $('#emoteUsage');
$txtName.val($txtName.val().replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
$txtURL.val($txtURL.val().replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
$txtUsage.val($txtUsage.val().replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
 
 介绍一下这篇关于jQuery性能的文章吧！ :) 
 
 这应该也很有效，而不是重复代码，只需使用jQuery对象创建一个数组，并对每个对象应用相同的替换。 
 
var $objs = [
        $('#emoteName'),
        $('#emoteUrl'),
        $('#emoteUsage')
    ];

$.each($objs, function() {
    var $this = $(this),
        val = $this.val();
    $this.val(val.replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
});

var $txtName = $('#emoteName'),
    $txtUrl = $('#emoteURL'),
    $txtUsage = $('#emoteUsage');
$txtName.val($txtName.val().replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
$txtURL.val($txtURL.val().replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
$txtUsage.val($txtUsage.val().replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
 
Mind take a look at this particular article regarding jQuery performance! :)
 
This should work great too, instead of repeating code, just create an array with your jQuery objects and apply the same replaces to each of them.
 
var $objs = [
        $('#emoteName'),
        $('#emoteUrl'),
        $('#emoteUsage')
    ];

$.each($objs, function() {
    var $this = $(this),
        val = $this.val();
    $this.val(val.replace(/(\r?\n){2,}/, '\n').replace(/^\r?\n|\r?\n$/, ''));
});