settimeout

问题 I have this function which pings my server for a specific change in data: function connected() { $.ajax({ success : function(d) { if (d.success) { // return data } else { setTimeout(connected, 200); } } }); } (Obviously the code has been stripped to the bare minimum to make my intentions clearer) What I want to do is return a bool true when it gets found, so I can go if (connected()) { // process data } (obviously the data is stored in a global variable.) Is there any way to achieve this?

问题 I have this function which pings my server for a specific change in data: function connected() { $.ajax({ success : function(d) { if (d.success) { // return data } else { setTimeout(connected, 200); } } }); } (Obviously the code has been stripped to the bare minimum to make my intentions clearer) What I want to do is return a bool true when it gets found, so I can go if (connected()) { // process data } (obviously the data is stored in a global variable.) Is there any way to achieve this?

问题 I want to run an interval with a delay for the first time it fires. How can I do this with useEffect? Because of the syntax I've found it difficult to achieve what I want to do The interval function useEffect(()=>{ const timer = setInterval(() => { //do something here return ()=> clearInterval(timer) }, 1000); },[/*dependency*/]) The delay function useEffect(() => { setTimeout(() => { //I want to run the interval here, but it will only run once //because of no dependencies. If i populate the

问题 I have a bot with a command that allows the user to input a message separated with a dash and then a specified time, this is then passed to the bot and the bot reminds the user with the message after the specified amount of time has passed. function reminder(msg) { const message = msg.content.replace(this.prefix+this.name+" ",""); const params = message.split("-"); setTimeout(() => { msg.channel.sendMessage(params[0]); }, (parseInt(params[1])*1000)); } I intend to run this bot on Heroku, but

问题 I have a bot with a command that allows the user to input a message separated with a dash and then a specified time, this is then passed to the bot and the bot reminds the user with the message after the specified amount of time has passed. function reminder(msg) { const message = msg.content.replace(this.prefix+this.name+" ",""); const params = message.split("-"); setTimeout(() => { msg.channel.sendMessage(params[0]); }, (parseInt(params[1])*1000)); } I intend to run this bot on Heroku, but

问题 I have a bot with a command that allows the user to input a message separated with a dash and then a specified time, this is then passed to the bot and the bot reminds the user with the message after the specified amount of time has passed. function reminder(msg) { const message = msg.content.replace(this.prefix+this.name+" ",""); const params = message.split("-"); setTimeout(() => { msg.channel.sendMessage(params[0]); }, (parseInt(params[1])*1000)); } I intend to run this bot on Heroku, but

问题 I have a test similar to what is shown below. Basically I want to test if a specific method is getting delayed. The following example works as expected, i.e. the resolve method gets called and the test passes: it(`should delay execution by 1 second`, function () { const clock = sandbox.useFakeTimers(); const p = new Promise(function (resolve) { setTimeout(resolve, 1000); }); clock.tick(1000); return p; }); However, if I wrap the setTimeout in another Promise, the resolve never gets called: it

问题 I have a test similar to what is shown below. Basically I want to test if a specific method is getting delayed. The following example works as expected, i.e. the resolve method gets called and the test passes: it(`should delay execution by 1 second`, function () { const clock = sandbox.useFakeTimers(); const p = new Promise(function (resolve) { setTimeout(resolve, 1000); }); clock.tick(1000); return p; }); However, if I wrap the setTimeout in another Promise, the resolve never gets called: it

问题 Say we have 2 tabs using data-role="navbar" , and we switch to the second tab and then go to another new page. When we return back from the previous page, why is the tab that we selected second tab is not the one which is active. It shows the first tab as only active. Is jquery mobile not handling this. 回答1: Description : Unfortunately jQuery Mobile don't handle this correctly so we need to do it. Basically you need to remove href from navbar li element. Page change will be handled manually.

问题 Say we have 2 tabs using data-role="navbar" , and we switch to the second tab and then go to another new page. When we return back from the previous page, why is the tab that we selected second tab is not the one which is active. It shows the first tab as only active. Is jquery mobile not handling this. 回答1: Description : Unfortunately jQuery Mobile don't handle this correctly so we need to do it. Basically you need to remove href from navbar li element. Page change will be handled manually.