To enable a form field use the below JavaScript document.getElementById("ELEMENT_ID").disabled = false; And to disable the form field use the below JavaScript document.getElementById("ELEMENT_ID").disabled = true; NOTE: Replace ELEMENT_ID with the form fields ID
There are two JavaScript function that you can use to accomplish this encodeURIComponent() Encodes a URI component Encodes special characters The following characters: , / ? : @ & = + $ # are encoded var url="http://test.com/index.php?url"+encodeURIComponent(url); encodeURI() Encode a URI Encodes special characters but not (except) , / ? : @ & = + $ # var url="http://test.com/index.php?url"+encodeURI(url);
$(document).ready(function() { var height = $('body').height(); alert(height) }); NOTE: Remember to include the JQuery library file.
With getting the id I mean getting the attribute id’s value for the first element within the first element of the unordered list tag. Answer: We can obtain this by using the :first Selector from JQuery. Read more about the selector here Example: HTML <ul class="custom_class"> <li><a href="test1.html" id="1" name="link1" /></li> <li><a href="test2.html" id="2" name="link2" /></li> <li><a href="test3.html" id="3" name="link3" /></li> <li><a href="test4.html" id="4" name="link4" /></li> <li><a href="test5.html" id="5" name="link5" /></li> </ul> JQuery ...
Add the following JavaScript function to your HTML page function isNumberKey(evt) { var charCode = (evt.which) ? evt.which : event.keyCode if (charCode > 31 && (charCode < 48 || charCode > 57)) return false; return true; } The above function checks the input of the user and then returns false if no number has been entered and true if a number has been entered Then in your textfield HTML code add the following ...
This can be obtained by using the Pre-defined object (Date) in JavaScript Example: document.write("The current date is:"+Date())
var filename = 'myFile.jpg'; var ext = filename.split('.').pop(); //We split the filename on every instance where the . is found and then getting the last element in the array using the pop() function alert(ext);
Use the following code to obtain the full URL [code]var fullURL = window.location.href; alert(fullURL);[/code] location.href holds the current URL for reference purposes and can be changed at any time. Once changed the page will reload with the new assigned URL
How to get the id of the first img html tag element within a specific div tag using JQuery? With getting the id I mean getting the attribute id’s value for the first element within the div tag. Answer: We can obtain this by using the :first Selector from JQuery. Read more about the selector here Example: HTML <img id="1" name="image1" src="myImage1.jpg" width="200" border="1" /> <img id="2" name="image2" src="myImage2.jpg" width="200" border="1" /> <img id="5" name="image3" src="myImage3.jpg" width="200" border="1" /> </div> JQuery ...
To get the total size of the array elements within an JavaScript array the JavaScriptlength property can be used. E.g. var arr = new Array(); arr[0] = 'val 1'; arr[1] = 'val 2'; alert(arr.length); //Will output 2