getelementbyid

问题 It is common for me to register javascript functions for certain events by doing something like: myBtn.Attributes.Add("onClick", "Validate(getElementById('"+txtFirstName.ClientID + "'));"); I've always used getElementById by itself, or in other words, sans document being prepended to it. But I'm having pages break on me lately when I try to use getElementById instead of document.getElementById . Why is this? Oddly, I have a website where one page allows me to use just getElementById , but

问题 I am new to Javascript and I would like to use the document.getElementById to show the value of items, in my example I would like to list the names printed in the var= btsFrontEnd ,but I am doing something wrong. Any help will be much appreciated. Thank you. Link to my Fiddle var btsFrontEnd = { "employee-1": { "name": "Name One", "phone": "1234567890", "email": "blah@blah.com" }, "employee-2": { "name": "Name Two", "phone": "1234567890", "email": "blah@blah." } }; var btsemployees = {

问题 I am using Microsoft Dynamics CRM 2015 on-premise version. I am applying a custom FetchXml to a subgrid using JavaScript. The issue here is document.getElementById(“selectedGrid”) returns null. I read articles says that this method is not supported anymore in 2015 Version. My question: is there any alternative to this method? 回答1: This works for me, and in fact I've been able to use document.getElementById as well. If you're adding an event or something (and hooking it to onLoad), just make

问题 I have an iframe on my page, and need to get a child element from it whose ID I have. I'd like to do something like this: document.getElementById('iframeID').getElementById('child element ID') I'm open to suggestions on how to accomplish this. Unfortunately I don't have access to jQuery or other handy libraries on this page. 回答1: You first need to access the iframe document, here is a cross-browser way to do it: var ifr=document.getElementById('iframeID'); var doc=ifr.contentWindow||ifr

问题 My current project consists of retrieving data from HTML source code. Specifically, I am looking at crash cases on this website: https://crashviewer.nhtsa.dot.gov/nass-cds/CaseForm.aspx?xsl=main.xsl&CaseID=112007272 I would like to gather all relevant data from the HTML by looking for .innertext of specific tags/IDs. My code so far: Sub ExtractData() mystart: 'First I create two Internet Explorer object Set objIE = CreateObject("InternetExplorer.Application") 'this browser contains the list

问题 I'm trying to use a textbox and a submit button to change a div on the page. I want to take the text that has been typed in the textbox and put it in the div when the button is clicked. I have this code: function myfunction() { var myText = document.getElementById("textbox").value; document.getElementById('myDiv').innerHTML = myText; } <form> <input type="text" name="textbox" id="textbox" /> <input type="submit" name="button" id="button" onclick="myfunction()" /> </form> <br/> <div id="myDiv"

问题 I would like to achieve the same effect found on the following website: http://www.kpf.com/projectlist.asp?T=4 On mouseover of an image, the corresponding text highlights and vice versa. I've found a JavaScript solution on a forum. I've copy-pasted the solution below: div code <div style="width:400;height:500;" onmouseover="hightlight()" onmouseout="removehightlight()"><span id="textspan" >This is a test div to show mouseover</span><img id="imgsrc" src="/images/test.gif" /></div> javascript

问题 Folks I'm a complete novice so apologise upfront for what is going to be a very basic question, I'm sure. I have a javascript file that is linked to a html file which contains a number of buttons. The onclick event for one such button seems to be completely bypassing the onlick event and triggering as soon as the page opens. Any ideas? Sorry to ask what is likely something really basic, but I have lost count of the hours I have spent trying to get it to work only on the "click" event.... in

问题 Very simple error here, I'm sure, but basically I have a form with id formID and im calling it like so: <script type="text/javascript"> function redvalidate() { var form = document.getElementById("formID") var fields = form.getElementsByClassName("validate"), And I'm getting the error: form is null Can anyone spot the error? (PS calling it onsubmit of a form) UPDATE Ok so basically i have two onsubmit for one form which oviously doesnt work. So what I am doing is calling this function from

问题 Working on an idea for a simple HTMLElement wrapper I stumbled upon the following for Internet Explorer and Chrome: For a given HTMLElement with ID in the DOM tree, it is possible to retrieve the div using its ID as the variable name. So for a div like <div id="example">some text</div> in Internet Explorer 8 and Chrome you can do: alert(example.innerHTML); //=> 'some text' or alert(window['example'].innerHTML); //=> 'some text' So, does this mean every element in the DOM tree is converted to