findIndex() method issue with internet explorer

Question

I am doing some tests with differents browsers using the Selenium::Remote::Driver module.

I would like to check if I find some item in my web site list, list from a framework JavaScript (which creates grids). For this case I have to use JavaScript snippet allowed by Selenium::Remote::Driver.

I wrote the following code

$script = q{        var paramProgramName = arguments[0];        var list  = $('#c-list').dxList('instance');       var items = list.option('items');       var index = items.findIndex(function(el){ return el.name == paramProgramName; });        list.selectItem(index);        return ; };  $driver->execute_script($script, $programName); 

It works fine with Chrome and Firefox but not with Internet Explorer because the findIndex method is only supported by version 12 and following. For some reason I have to use version 11.

What can I do differently to get an index from every browser?

Answer 1

So my question is how can i do differently to get my index for every browser ?

You have at least three options:

1. Shim Array#findIndex; MDN has a shim/polyfill you can use.

2. Use something else that IE11 has, such as Array#some (which even IE9 has):

   var index = -1; items.some(function(el, i) {     if (el.name == paramProgramName) {         index = i;         return true;     } }); 

3. Use something else that even IE8 has, such as for:

   var index = -1; for (var i = 0; i < items.length; ++i) {     if (items[i].name == paramProgramName) {         index = i;         break;     } }