javascript-events

问题 I'm making a Web application that tests typing speeds. It gives the user some text to type, and an input box to type into. If the user types a wrong key, I'm using preventDefault on the produced key event to prevent the wrong character from being entered into the input box (I instead show the user an error message). The problem is, preventDefault doesn't prevent backspaces from being entered. Ideally, since wrong keys presses will never be entered into the text box, it doesn't make sense to

问题 I need to run a script every time a table is resized (whenever the user resizes the browser window). Does anyone know how this can be done? 回答1: function myFunction() { alert('resized'); } window.onresize = myFunction; 回答2: window.onresize = function(){alert('test');} 回答3: If you use Jquery, $(window).resize(function() { alert("test now"); }); 来源： https://stackoverflow.com/questions/2733533/how-can-i-run-a-javascript-function-every-time-an-html-element-is-resized

问题 I want text in the span field to change as the input field changes live . So I have a input field <input type="text"> and a span field <span></span> I want text in the span field to change as I type in the input field. I know there's already a question like this that was asked Change span when text field changes. But what makes this question different is the changes should happen as you type i.e. live . 回答1: Here is a vanilla JavaScript version. var input = document.querySelector("[type=text]

问题 I want text in the span field to change as the input field changes live . So I have a input field <input type="text"> and a span field <span></span> I want text in the span field to change as I type in the input field. I know there's already a question like this that was asked Change span when text field changes. But what makes this question different is the changes should happen as you type i.e. live . 回答1: Here is a vanilla JavaScript version. var input = document.querySelector("[type=text]

问题 Similar to the way jQuery loads after the document has loaded I need a certain bit of jQuery after a JavaScript script has FINISHED. I am loading contact data from Google Data API and the div where the data shows up needs to be completely loaded (by the javascript) to be accessible by the jQuery if I'm right. Is there any way to do this? 回答1: Let's say you're waiting for Google Analytics to load. Now, you know that when Google Analytics loads, _gaq will be registered on the DOM. So, barring

问题 Similar to the way jQuery loads after the document has loaded I need a certain bit of jQuery after a JavaScript script has FINISHED. I am loading contact data from Google Data API and the div where the data shows up needs to be completely loaded (by the javascript) to be accessible by the jQuery if I'm right. Is there any way to do this? 回答1: Let's say you're waiting for Google Analytics to load. Now, you know that when Google Analytics loads, _gaq will be registered on the DOM. So, barring

问题 Similar to the way jQuery loads after the document has loaded I need a certain bit of jQuery after a JavaScript script has FINISHED. I am loading contact data from Google Data API and the div where the data shows up needs to be completely loaded (by the javascript) to be accessible by the jQuery if I'm right. Is there any way to do this? 回答1: Let's say you're waiting for Google Analytics to load. Now, you know that when Google Analytics loads, _gaq will be registered on the DOM. So, barring

问题 This seems to be one step more complicated than similar posts I've seen: I created the following line within a js function: content.push("<input type='button' value='Use This Location' onclick='alert(" + result.location.y + "," + result.location.x + ")'/>"); The result is a button with the following: onclick="alert(40.7445068,-73.9834671)" but I want the result to be: onclick="alert('40.7445068,-73.9834671')" or..you know..just.. however it would take to make the alert show the text, not just

问题 This seems to be one step more complicated than similar posts I've seen: I created the following line within a js function: content.push("<input type='button' value='Use This Location' onclick='alert(" + result.location.y + "," + result.location.x + ")'/>"); The result is a button with the following: onclick="alert(40.7445068,-73.9834671)" but I want the result to be: onclick="alert('40.7445068,-73.9834671')" or..you know..just.. however it would take to make the alert show the text, not just

问题 This seems to be one step more complicated than similar posts I've seen: I created the following line within a js function: content.push("<input type='button' value='Use This Location' onclick='alert(" + result.location.y + "," + result.location.x + ")'/>"); The result is a button with the following: onclick="alert(40.7445068,-73.9834671)" but I want the result to be: onclick="alert('40.7445068,-73.9834671')" or..you know..just.. however it would take to make the alert show the text, not just