We set it to 3 because the Ireland option in our list has a value attribute of 3. However, Internet Explorer prior to version 9 will not provide the value in this case.If your option elements do not include value attributes and you wish to support older browsers, for best results use the loop to iterate through the options of a select list to determine which is selected. Ib brokers forex. A function can be defined to return a reference to the selected option or its value.As you can see, the initially selected item is the first item on the list.In order to pre-select an item on the drop down list you can do so prior to the page being rendered by adding a selected="selected" attribute inside the required option.So if we wish to pre-select item 3 for the above example, we can use... From time-to time it may be the case that the item required for pre-selection is not known until an event occurs on the page after the page has been rendered.
If I select the item manually, other elements in the page change and react to the selection. When I fireup the document.ready or _sp Body On Load Function Names.push, the options of that lookup is not available. And how can I retrieve the options and select one option if not all options are available? Via JS, only the dropdown is filled, but nothing else responds to that.. On 2nd August 2016Thanks for these wonderful guide, but can i request a guide for this situation. Situation: A visitor of the site wanted to preselect an item on the dropdown upon loading the site and clicking the icon below it. Fairer handel 24. [[How can you do that using greasemonkey with jquery, how would you write the script with that.. /** * Empty Select Box * @param eid Element ID * @param value text * @param text text * @author Neeraj.Output on a select with ~4000 elements: 1 ms 58 ms 612 ms With Firefox 10.
Note: The only reason I did this test, was because j Query performed super poorly on our list with ~2000 entries (they had longer texts between the options).We had roughly 2 s delay after a val() Note as well: I am setting value depending on the real value, not the text value element.None of them works, because the Angular JS form validation is not fired. Although the right option was selected (and is displayed in the form), the input remained invalid (ng-pristine and ng-invalid classes still present).Any input/form field can use a “this” keyword when you are accessing it from inside the element. names for form elements will need to be unique for your form to be usable once posted, but the DOM can allow a name be shared by more than one element.This eliminates the need for locating a form in the dom tree and then locating this element inside the form. For that reason consider adding IDs to forms if you can, or be explicit with form element names var ddl View By = Element By Id('ddl View By'); var value = ddl View By.options[ddl View By.selected Index].value; var text = ddl View By.options[ddl View By.selected Index].text; alert (value); // This will output the value selected alert (text); // This will output the text of the value selected is still valid, also in HTML5, and should still be used.
Lastly, mind the use of square versus round brackets in certain places.As was explained before, only (older versions of) Internet Explorer will accept round ones in all places.Var e = Element By Id("ddl View By"); var val1 = e.options[e.selected Index].value; var txt = e.options[e.selected Index].text; document.write("Selected option Value: " val1); document.write("Selected option Text: " txt); To go along with the previous answers, this is how I do it as a one-liner. O free forex signals. This is for getting the actual text of the selected option.There are good examples for getting the index number already.(And for the text, I just wanted to show this way) I doubt this processes any faster than the two line version.
I simply like to consolidate my code as much as possible.Unfortunately this still fetches the element twice, which is not ideal.A method that only grabs the element once would be more useful, but I have not figured that out yet, in regards to doing this with one line of code. Naruto broken bond zenigoke. Setting the selected Index property of the select tag will choose the correct item.It is a good idea of instead of comparing the two values (options inner HTML && animal value) you can use the index Of() method or regular expression to select the correct option despite casing or presense of spaces If you want this without loops or jquery you could use the following This is straight up Java Script. Given the age of the question I am not sure if this would have worked back in 2011.Please note that using css style selectors is extremely powerful and can help shorten a lot of code.
Attribute so when I click reset button, it will select "Indonesia" again.Changing the js function to dynamically create "country" options is not an option. thank you const EL_country = document.query Selector('#country'); EL_country.value = 'ID'; // Set SELECT value to 'ID' ("Indonesia") EL_country.options[EL_country.selected Index].default Selected = true; // Add Attribute selected to Option Element document.forms.reset(); // "Indonesia" is still selectedconst countries = ; const EL_country = document.query Selector('#country'); // (Bad example.Ideally use .create Document Fragment() and .append Child() methods) EL_country.inner HTML = Object.keys(countries).reduce((str, key) = In the demo above Document.create Document Fragment is used to prevent rendering elements inside the DOM in a loop. Foreign currency nab. Instead, the fragment (containing all the Options) is appended to the Select only once.The selectedness of an option element is a boolean state, initially false. Set SELECT value'); form Reset(); EL_select.value = 'AL'; // Constatation: Mutation Observer did NOT triggered!!!!Except where otherwise specified, when the element is created, its selectedness must be set to true if the element has a selected attribute. test Options Selected By Property(); test Options Selected By Attribute(); test Select(); console.log('\n2.