Hi I am trying to create a bunch of checkboxes without having to make each one currently I have:
function test(obj) {
if (document.getElementByID("info").checked == true) {
document.getElementById("gender")[0].disabled = true;
}
}
and it works for one checkbox but I have been trying to use the code below:
function test(obj) {
var x = obj.name;
var rowCount = $('#List tr').length;
for (var i = 0; i rowCount-1; i++) {
if (x 开发者_StackOverflow中文版== document.getElementByID("info"["+i+"]).checked == true) {
document.getElementById("gender"["+i+"]).disabled = true;
}
}
}
to create as many checkboxes as I want without me having to make each one but it doesn't seem to be working.
Ok, lets start from the beginning:
To create a check-box in javascript you must do something like this:
var checkbox = document.createElement("input");
checkbox.type = "checkbox";
Then to add your checkbox into a div on your webpage you would do something like:
document.getElementById("your_div_id").appendChild(checkbox);
Then to see if the checkbox is checked you look at the "checked" property like so:
var isChecked = !!document.getElementById("your_checkbox").checked;
if(isChecked == true){
// Do whatever you want
}
Here's a function that would loop through a bunch of checkboxes
function testCheckBoxes(container_id){
var checkboxes = document.querySelector("#" + container_id + " > input[type='checkbox']");
for(var i = 0; i < checkboxes.length; i++){
if(!!checkboxes[i].checked == true){
// Your code
}
}
[Side Note: I'm using document.querySelector
for consistency but since I think you're using jquery then use $
instead]
If you want to do something when someone clicks on your checkbox the use an event listener:
var list = document.getElementsByClassName("checkbox");
for(var i = 0; i < list.length; i++){
list[i].addEventListener('click', function(event){
if(!!event.target.checked == true){
// Do something
}
}, true);
}
Hopefully this is enough to get you started. Good Luck =)
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