问题描述
对于给定的例子,之间有什么区别 this.el
&安培; 这一点。$埃尔
据我所知,这一点。$埃尔
点 this.el
的jQuery对象,在这种情况下,为礼
。
当我渲染一个观点,我可以 this.el
之间进行选择,或这一点。$埃尔
。我怎么能够呈现的东西的网页,当我引用jQuery对象?我可以看到如何使用这一点。$ el.html(财产)
,指向HTML,但为什么追加这一点。$埃尔
并让它呈现是混淆了我。
变种人= Backbone.Model.extend({
默认值:{
名称:'李四',
年龄:30
职业:工人
}
});VAR PersonView = Backbone.View.extend({
标签名:礼, 初始化:功能(){
this.render();
}, 渲染:功能(){
变量超出= $这个el.html(this.model.get('名')+ this.model.get('占领'));
的console.log(这一点,this.el,这$埃尔,出);
$('身体')追加(这$ EL)。
},});变种人=新的人;
VAR personview =新PersonView({模式:人});
Bojangles是正确的。
这一点。$埃尔
是元素的引用jQuery中的背景下,对于一般的东西)使用像的.html(
或 .addClass()
等。例如,如果您有ID的div someDiv
,并且将它设置为骨干视图的报
属性,下面的语句是相同的:
这一点。$ el.html()
$(#someDiv)。HTML()
$(this.el)的.html()
this.el
是本机的DOM元素,的jQuery不变。
For the given example, what is the difference between this.el
& this.$el
I understand that this.$el
points to the jQuery object of this.el
, which in this case is 'li'
.
When I render a view, I can choose between this.el
, or this.$el
. How am I able to render something to a page when I reference the jQuery object? I can see how using this.$el.html(property)
, points to the html, but why appending this.$el
and having it render is what confuses me.
var Person = Backbone.Model.extend({
defaults: {
name: 'John Doe',
age: 30,
occupation: 'worker'
}
});
var PersonView = Backbone.View.extend({
tagName: 'li',
initialize: function() {
this.render();
},
render: function() {
var out = this.$el.html(this.model.get('name') + this.model.get('occupation'));
console.log(this, this.el, this.$el, out);
$('body').append(this.$el);
},
});
var person = new Person;
var personview = new PersonView({model: person});
Bojangles is correct.
this.$el
is a reference to the element in the context of jQuery, typically for use with things like .html()
or .addClass()
, etc. For example, if you had a div with id someDiv
, and you set it to the el
property of the Backbone view, the following statements are identical:
this.$el.html()
$("#someDiv").html()
$(this.el).html()
this.el
is the native DOM element, untouched by jQuery.
这篇关于骨干this.el VS这一点。$埃尔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!