Bootstrap Modal焦點問題

Question

我有引導模式，其中我有桌子，我想通過按下面的向上鍵和向下鍵專注於行，這是我在js中的代碼，但焦點僅在IE中不起作用

var _checkKey = function (e) {
    var event = window.event ? window.event : e;
    if (event.keyCode === 13)  // the enter key code
    {
        $("tr:focus").click();
        event.preventDefault();
        return;
    }

    if (event.keyCode === 40) { //down
        event.preventDefault();

        var idx = $("tr:focus").attr("tabindex");
        if (!idx)
            idx = 0;
        else
            idx++;

        $("tr[tabindex=" + idx + "]").focus();
    }
    if (event.keyCode === 38) { //up
        event.preventDefault();

        var idx = $("tr:focus").attr("tabindex");
        idx--;

        $("tr[tabindex=" + idx + "]").focus();
    }
}

該函數通過keydown事件調用

波紋管是用於引導程序模式的html代碼，

相同的代碼在chrome和IE 11中有效，但在引導程序模型中則無效

 <div class="modal fade in" id="commonModal" role="dialog" aria-hidden="false" style="display: block;"> <div class="modal-dialog modal-lg"> <div class="modal-content visible-o-flow"> <div class="modal-header"> <h3 class="modal-title fl" id="Title">Header</h3> <button class="close wa m-0 fr" aria-label="Close" type="button" data-dismiss="modal"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body fw" id="miscDiv"> <form class="fh" id="msform"> <div class="col-md-12 p-0"> <div id="lookupDiv" style="left: 191.09px; top: 153.68px; width: 538.4px; display: block; position: absolute; z-index: 9000;"> <table class="table table-responsive table-fixed table-hover"> <thead> <tr> <th class="col-md-3">Code</th> <th class="col-md-9">Description</th> </tr> </thead> <tbody id="lookupTable"> <tr tabindex="0" style="cursor: pointer;"><td>729</td><td>SAMOA</td></tr> <tr tabindex="1" style="cursor: pointer;"><td>209</td><td>AFGHANISTAN</td></tr> <tr tabindex="2" style="cursor: pointer;"><td>265</td><td>AZERBAIJAN</td></tr> <tr tabindex="3" style="cursor: pointer;"><td>201</td><td>IRAN (ISLAMIC REPUBLIC OF)</td></tr> <tr tabindex="4" style="cursor: pointer;"><td>235</td><td>NEPAL</td></tr> <tr tabindex="5" style="cursor: pointer;"><td>645</td><td>PARAGUAY</td></tr> <tr tabindex="6" style="cursor: pointer;"><td>347</td><td>SIERRA LEONE</td></tr> <tr tabindex="7" style="cursor: pointer;"><td>267</td><td>TAJIKISTAN</td></tr> <tr tabindex="8" style="cursor: pointer;"><td>233</td><td>VIET NAM</td></tr> <tr tabindex="9" style="cursor: pointer;"><td>309</td><td>CAMEROON</td></tr> <tr tabindex="10" style="cursor: pointer;"><td>727</td><td>MARSHALL ISLANDS</td></tr> </tbody> </table> </div> </div> </form> </div> </div> </div> </div> 

Answer 1

嘗試將其放在var事件行之后：

var event = window.event ? window.event : e;
var kCode = event.keyCode || event.which;//for IE, FireFox and Chrome
if (kCode === 13)...

至少對我來說，可以在Chrome和FireFox中使用

Answer 2

我有一個相同的問題，但沒有得到任何宗教解決方案，因此我經歷了

我將此代碼放在模式點擊事件上。

setTimeout(()=>{
    document.getElementById("id").focus();
},9000);

//id is the name of element where you want to put your focus