src/util/placeholder/platform/holder.patch.js
function(_id){
		        var _input = _e._$get(_id);
		        _cache[_id] = 2;
		        if (!!_input.value) return;
		        _e._$setStyle(
		            _e._$wrapInline(_input,_ropt),
		            'display','none'
		        );
		    }
function(_id){
		        var _input = _e._$get(_id);
		        _cache[_id] = 2;
		        if (!!_input.value) return;
		        _e._$setStyle(
		            _e._$wrapInline(_input,_ropt),
		            'display','none'
		        );
		    }
function ( _id ) { var _input = _e . _$get ( _id ) ; _cache [ _id ] = 2 ; if ( ! ! _input . value ) return ; _e . _$setStyle ( _e . _$wrapInline ( _input , _ropt ) , 'display' , 'none' ) ; }
input foucs hide placeholder
input foucs hide placeholder