nl_tokens: For IE8 and IE9 .
pl_tokens: function getTargetInstForInputEventPolyfill ( topLevelType , targetInst ) { if ( topLevelType === TOP_SELECTION_CHANGE || topLevelType === TOP_KEY_UP || topLevelType === TOP_KEY_DOWN ) { // On the selectionchange event, the target is just document which isn't // helpful for us so just check activeElement instead. // // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire // propertychange on the first input event after setting `value` from a // script and fires only keydown, keypress, keyup. Catching keyup usually // gets it and catching keydown lets us fire an event for the first // keystroke if user does a key repeat (it'll be a little delayed: right // before the second keystroke). Other input methods (e.g., paste) seem to // fire selectionchange normally. <mask> getInstIfValueChanged ( activeElementInst ) ; } }