我有关于setTimeout的各种问题:
- 在我的代码中,我使用clearTimeout(content.idTimeout)
清除特定idTiemout的超时,但所有超时有多清楚?
我有下一个型号:
var ContentModel = Backbone.Model.extend({
URL: "http://localhost/example.php",
requestType: "POST",
dataType: "json",
data: "", //Set the value outside the model
idTimeout: "",
initialize: function() {
_.bindAll(this);
},
startSend: function (Data) { },
reply: function (Data) {
var dataJson = eval(Data);
console.log(dataJson);
this.idTimeout = setTimeout(this.ajaxRequest(),4000);
},
problems: function (Data) { },
ajaxRequest: function () {
$.ajax({
async:true,
type: this.requestType, dataType: this.dataType,
url: this.URL, data: this.data,
beforeSend:this.startSend, success: this.reply,
timeout:4000, error:this.problems
});
}
在视图(片段)中清除超时:
initialize: function() {
_.bindAll(this);
this.model = new ContentCollection();
this.model.on("add", this.contentAdded);
this.model.on("remove", this.removeContent);
},
contentAdded: function(content) { //run it when add a model
if (content.view == null) {
var template_name = 'cam';
content.view = new ContentView({model: content,template: $.trim($("[template='"+ template_name +"'] div").html() || "Template not found!")});
$("div.camBox").empty();
content.ajaxRequest();
this.$el.find(".content").find("div.camBox").append(content.view.render().el);
}
},
removeContent: function(content) {
if (content.view != null) {
content.view.remove();
}
clearTimeout(content.idTimeout);
content.clear(); //Clear the properties of the model
}
- 焦点在其他窗口时如何清除超时并在返回时恢复? 也许用焦点方法。下一个代码
$('html').focus(function() {
clearTimeout(content.idTimeout);
});
在contentAdded中不起作用。
编辑:
http://stackoverflow.com/questions/14258596/way-to-stop-the-running-of-a-javascript-web-application-when-the-focus-is-on-oth
答案 0 :(得分:3)
一种解决方案可能是:
为(多个)超时ID指定一个数组。
window.timeouts = [];
每次调用setTimeout:
timeouts.push(setTimeout(...));
然后,如果你想停止所有超时:
for(var i in timeouts) {
clearTimeout(timeouts[i]);
}