jQuery的getScript加入 - 包括文件转换成主要适用范围? [英] jQuery's getScript - including files into the main scope?
问题描述
我也想了很多,我应该怎样包括我Backbone.js的应用程序文件。在生产中,我显然会加入我的文件,并尽量减少他们继续要求在最低限度,但发展过程中,这将是很好,只是有加载的所有文件,不必要求每一个小变化buildscript。
所以,我已经采取了看看的jQuery
的 getScript加入()
-method。我尝试过了,并能加载我的文件。
由于我已经把 getScript加入
-call成一个功能,确保之前,我开始我的Backbone.js的应用程序文件被加载,似乎每个脚本加载,不包括到全球范围。
VAR装载机=功能(){
变种脚本= ['/app/routers/myrouter.js']; 对于(VAR I = 0; I< scripts.length;我++){
$ .getScript(脚本[I],函数(){});
} 的console.log(myrouter); //工程 - myrouter是一个函数
在里面(); //回调 - 我们已经加载的所有脚本
};VAR的init =功能(){
的console.log(myrouter); // myrouter是不确定的
};$(文件)。就绪(装载机());
那么首先,你只是叫装载机()
强似功能:
$(文件)。就绪(装载机);
将解决这个问题。
其次,您呼叫的的init
回调的时候了,而不是当加载的所有脚本。如果有很多的脚本,你需要使用的承诺:
VAR脚本= ['/app/routers/myrouter.js'];
对于(VAR I = 0; I< scripts.length;我++){
脚本由[i] = $ .getScript(脚本[I]);
}
$ .when.apply($,脚本)。然后(INIT,函数(){
一些脚本失败;
});
以上使用的语法是 $时(promise1,promise2,...),那么(successCallback,failureCallback)
- 。我们填补阵列的承诺和使用。适用
将它们应用作为参数。</ p>
http://api.jquery.com/jQuery.when/
http://api.jquery.com/Deferred.then/
I have thought a lot about how I should include files in my backbone.js-application. In production, I am obviously going to join my files and minimize them to keep requests at a minimum, but during development, it would be nice to just have all files loaded and not having to call a buildscript for every little change.
So I have taken a look at jQuery
's getScript()
-method. I tried it out and were able to load my files.
As I've put the getScript
-call into a function, to ensure that files are loaded before I initiate my backbone.js application, it appears that every script loaded, are not included into the global scope.
var loader = function () {
var scripts = ['/app/routers/myrouter.js'];
for (var i = 0; i < scripts.length; i++) {
$.getScript(scripts[i], function () {});
}
console.log(myrouter); // Works - myrouter is a function
init(); // Callback - we've loaded all scripts
};
var init = function () {
console.log(myrouter); // myrouter is undefined
};
$(document).ready(loader());
Well first of all, you are just calling loader()
instead of passing the function:
$(document).ready(loader);
Will fix that
Secondly, you are calling the init
callback right away instead of when all the scripts are loaded. If there are many scripts you need to use promises:
var scripts = ['/app/routers/myrouter.js'];
for (var i = 0; i < scripts.length; i++) {
scripts[i] = $.getScript(scripts[i]);
}
$.when.apply( $, scripts ).then( init, function(){
"some script failed";
});
The syntax used above is $.when( promise1, promise2, ...).then( successCallback, failureCallback)
- we fill the array with promises and use .apply
to apply them as arguments.
http://api.jquery.com/jQuery.when/
http://api.jquery.com/Deferred.then/
这篇关于jQuery的getScript加入 - 包括文件转换成主要适用范围?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!