js复制指定到剪切板兼容安卓和苹果

    function cut(){
                    var obj=document.getElementById('fxlj').innerHTML;
                    var obj1=document.getElementById('fxlj1').innerHTML;
                        var input = document.createElement("input");
            input.value = obj+obj1;
            document.body.appendChild(input);
            input.select();
            input.setSelectionRange(0, input.value.length), document.execCommand('Copy');
            document.body.removeChild(input);
           alert('复制成功');