粘贴复制

方法1:   

方法二:

方法三:

// 第三种 ios 设备和 android设备均正常,但是pc端没有
//定义函数
window.Clipboard = (function(window, document, navigator) {
    var textArea,
        copy;

    // 判断是不是ios端
    function isOS() {
        return navigator.userAgent.match(/ipad|iphone/i);
    }
    //创建文本元素
    function createTextArea(text) {
        console.log(text,"text");
        textArea = document.createElement('textArea');
        console.log(textArea,"textArea");
        textArea.innerHTML = text;
        textArea.value = text;
        console.log(textArea.value,"textArea.value");
        document.body.appendChild(textArea);
    }
    //选择内容
    function selectText() {
        var range,
            selection;
        if (isOS()) {
            range = document.createRange();
            range.selectNodeContents(textArea);
            selection = window.getSelection();
            selection.removeAllRanges();
            selection.addRange(range);
            textArea.setSelectionRange(0, 999999);
        } else {
            textArea.select();
        }
    }

    //复制到剪贴板
    function copyToClipboard() {
        try{
            if(document.execCommand("Copy")){
                Toast("复制成功！",1000);
            }else{
                Toast("复制失败！请手动复制！",1000);
            }
        }catch(err){
            Toast("复制错误！请手动复制！",1000);
        }
        document.body.removeChild(textArea);
    }

        copy = function(text) {
            createTextArea(text);
            selectText(text);
            copyToClipboard(text);
        };

        return {
            copy: copy
        };
     })(window, document, navigator);

//使用函数
$("#copy").on("click",function(){
    var  val = $("#textAreas").val();
    console.log("val",val)
    Clipboard.copy(val);
});

方法四: