Javascript 如何修改此函数以添加eventListener?
我有一个模态函数,如下所示:Javascript 如何修改此函数以添加eventListener?,javascript,jquery,ruby-on-rails,Javascript,Jquery,Ruby On Rails,我有一个模态函数,如下所示: +(function () { 'use strict'; /** * @constructor */ var Modal = function (target) { this.$target = document.querySelector(target); this.$dismiss = this.$target.querySelectorAll('[data-dismiss="modal"]'); this.$backdrop =
+(function () {
'use strict';
/**
* @constructor
*/
var Modal = function (target) {
this.$target = document.querySelector(target);
this.$dismiss = this.$target.querySelectorAll('[data-dismiss="modal"]');
this.$backdrop = null;
this.isVisible = false;
};
Modal.prototype.toggle = function () {
return this[!this.isVisible ? 'show' : 'hide']();
};
Modal.prototype.show = function () {
if (this.isVisible) {
return;
}
var me = this;
this.isVisible = true;
// Disable scrolling of content behind the modal
document.body.classList.toggle('modal-open');
this.escape();
// Add close events
for (var i = 0; i < this.$dismiss.length; i++) {
this.$dismiss[i].addEventListener('click', this.hide.bind(this));
}
this.backdrop(function () {
me.$target.style.display = 'block';
me.$target.scrollTop = 0;
me.$target.setAttribute('aria-hidden', false);
// Modal must be the focused element
me.$target.focus();
});
};
Modal.prototype.hide = function (e) {
if (e) {
e.preventDefault();
}
if (!this.isVisible) {
return;
}
var me = this;
this.isVisible = false;
// Enable scrolling of content behind the modal
document.body.classList.toggle('modal-open');
this.escape();
// Remove close events
for (var i = 0; i < this.$dismiss.length; i++) {
this.$dismiss[i].removeEventListener('click', this.hide.bind(this));
}
this.$target.setAttribute('aria-hidden', true);
this.$target.style.display = 'none';
this.backdrop();
};
Modal.prototype.backdrop = function (callback) {
if (this.isVisible && !this.$backdrop) {
// Create backdrop
this.$backdrop = document.createElement('div');
this.$backdrop.className = 'modal-backdrop fade';
document.body.appendChild(this.$backdrop);
// Backdrop fade in
this.$backdrop.classList.add('in');
} else {
// Remove backdrop
this.$backdrop.parentNode.removeChild(this.$backdrop);
this.$backdrop = null;
}
if (callback) {
callback();
}
};
Modal.prototype.keyDown = function (e) {
this.isVisible && (e.keyCode === 27) && this.hide();
};
Modal.prototype.escape = function () {
this.isVisible ?
this.$target.addEventListener('keydown', this.keyDown.bind(this)) :
this.$target.removeEventListener('keydown', this.keyDown.bind(this));
};
Modal.init = function () {
var modal,
target,
triggers = document.querySelectorAll('[data-modal]');
// Attach click event to modal trigger elements
for (var i = 0; i < triggers.length; i++) {
triggers[i].addEventListener('click', function (e) {
target = this.getAttribute('data-modal');
if (e) { e.preventDefault(); }
modal = new Modal(target);
modal.toggle();
}, false);
}
};
// Self initialization
document.addEventListener('DOMContentLoaded', function () {
Modal.init();
}, false);
$(document).ready(function() {
setInterval(function() {
Modal.init();
}, 4000);
});
})();
但单击时不会触发日志/调用。有什么想法吗
这是在Ruby on Rails应用程序上运行的javascript。我建议将您的单击处理程序连接到文档,以便在一个地方处理任何单击事件。否则,您可能需要在修改页面内容(如使用AJAX)时重新附加单击处理程序。例如,假设您有一个id为“tab_button”的链接,如下所示:
<a href="..." id="tab_button">...</a>
美好的所以console.log触发得很好,但由于某些原因,Modal.init没有被调用…Hmmmm.Modal.init在记录之后被调用,但是它没有弹出模态,所以它一定是其他的。不过,这肯定回答了我最初的问题。添加一个setTimeout允许函数等待一秒钟,以便页面上的AJAX从元素中交换出来,而且它工作得非常好!非常感谢@lolcopter-如果您将Modal.init更改为使用$document.on'click','data Modal]',function{},则不需要setTimeout。
<a href="..." id="tab_button">...</a>
$(document).on('click', '#tab_button', function(event) {
event.preventDefault();
console.log('Tab button was clicked');
Modal.init();
});