Answer 1

参考vue源码对v-model的实现中，对输入中文的处理

<input id='myinput'>

    function jeiliu(timeout){
        var timer;
        function input(e){
        if(e.target.composing){
            return ;
        }
        if(timer){
           clearTimeout(timer);
        }
        timer = setTimeout(() => {
               console.log(e.target.value);
               timer = null;
           }, timeout); 
        }
        return input;
    }

    function onCompositionStart(e){
        e.target.composing = true;
    }
    function onCompositionEnd(e){
        //console.log(e.target)
        e.target.composing = false;
        var event = document.createEvent('HTMLEvents');
        event.initEvent('input');
        e.target.dispatchEvent(event);
    }
    var input_dom = document.getElementById('myinput');
    input_dom.addEventListener('input',jeiliu(1000));
    input_dom.addEventListener('compositionstart',onCompositionStart);
    input_dom.addEventListener('compositionend',onCompositionEnd);