Gemeinschaft Lernen Tools-Bibliothek Freizeit
suchen
Deutsch
Heim > Web-Frontend > HTML-Tutorial > Verwenden Sie einfach die Tastatur, um die Bewegung der Blöcke zu steuern

Verwenden Sie einfach die Tastatur, um die Bewegung der Blöcke zu steuern

WBOY
Freigeben： 2016-08-30 09:21:07
Original
1983 Leute haben es durchsucht
<span style="color: #0000ff;"><!</span><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">html </span><span style="color: #ff0000;">lang</span><span style="color: #0000ff;">="en"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>键盘控制方块移动<span style="color: #0000ff;"></</span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span><span style="background-color: #f5f5f5; color: #800000;">
    #box</span><span style="background-color: #f5f5f5; color: #000000;">{</span><span style="background-color: #f5f5f5; color: #ff0000;">
        width</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">
        height</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">
        background-color</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> green</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">
        position</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> relative</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">
        left</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #ff0000;">
        top</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 50px</span><span style="background-color: #f5f5f5; color: #000000;">;</span>
    <span style="background-color: #f5f5f5; color: #000000;">}</span>
    <span style="color: #0000ff;"></</span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="box"</span><span style="color: #0000ff;">></</span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><</span><span style="color: #800000;">script</span><span style="color: #0000ff;">></span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> var box=document.getElementById('box');//此部分代码的效果会用小小的停顿，下面的为改进代码</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> var l=0;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> var t=0;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> document.onkeydown=function(){</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     var e=window.event||ev;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     // console.log(e.keyCode);</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     if (e.keyCode==37) {</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         l-=10;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         box.style.                               </span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         left=l+'px';</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     }</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     if (e.keyCode==38) {</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         t-=10;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         box.style.top=t+'px';</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     }</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     if (e.keyCode==39) {</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         l+=10;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         box.style.left=l+'px';</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     }</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     if (e.keyCode==40) {</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         t+=10;</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">         box.style.top=t+'px';</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">     }</span>
        <span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;"> }</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> div</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">document.getElementById(</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">box</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">);
        </span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> s</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">,left</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">,right</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">,bottom</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span><span style="background-color: #f5f5f5; color: #008000;">//</span><span style="background-color: #f5f5f5; color: #008000;">用top不可以，为保留字；</span>
        <span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> timer</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #0000ff;">null</span><span style="background-color: #f5f5f5; color: #000000;">,x</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">50</span><span style="background-color: #f5f5f5; color: #000000;">,y</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">50</span><span style="background-color: #f5f5f5; color: #000000;">;
        timer</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">setInterval(</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(){
            </span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;"> (left</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">) {
                x</span><span style="background-color: #f5f5f5; color: #000000;">-=</span><span style="background-color: #f5f5f5; color: #000000;">5</span><span style="background-color: #f5f5f5; color: #000000;">;
                div.style.left</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">x</span><span style="background-color: #f5f5f5; color: #000000;">+</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">px</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">;
            }
            </span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;"> (right</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">) {
                x</span><span style="background-color: #f5f5f5; color: #000000;">+=</span><span style="background-color: #f5f5f5; color: #000000;">5</span><span style="background-color: #f5f5f5; color: #000000;">;
                div.style.left</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">x</span><span style="background-color: #f5f5f5; color: #000000;">+</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">px</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">;
            }
            </span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;"> (s</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">) {
                y</span><span style="background-color: #f5f5f5; color: #000000;">-=</span><span style="background-color: #f5f5f5; color: #000000;">5</span><span style="background-color: #f5f5f5; color: #000000;">;
                div.style.top</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">y</span><span style="background-color: #f5f5f5; color: #000000;">+</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">px</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">;
            }
            </span><span style="background-color: #f5f5f5; color: #0000ff;">if</span><span style="background-color: #f5f5f5; color: #000000;"> (bottom</span><span style="background-color: #f5f5f5; color: #000000;">==</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">) {
                y</span><span style="background-color: #f5f5f5; color: #000000;">+=</span><span style="background-color: #f5f5f5; color: #000000;">5</span><span style="background-color: #f5f5f5; color: #000000;">;
                div.style.top</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">y</span><span style="background-color: #f5f5f5; color: #000000;">+</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">px</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">;
            }
        },</span><span style="background-color: #f5f5f5; color: #000000;">20</span><span style="background-color: #f5f5f5; color: #000000;">)
        document.onkeydown</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(ev){
            </span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> e</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">ev</span><span style="background-color: #f5f5f5; color: #000000;">||</span><span style="background-color: #f5f5f5; color: #000000;">window.event;
            </span><span style="background-color: #f5f5f5; color: #0000ff;">switch</span><span style="background-color: #f5f5f5; color: #000000;">(e.keyCode){
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">37</span><span style="background-color: #f5f5f5; color: #000000;">:
                    left</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">38</span><span style="background-color: #f5f5f5; color: #000000;">:
                    s</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">39</span><span style="background-color: #f5f5f5; color: #000000;">:
                    right</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">40</span><span style="background-color: #f5f5f5; color: #000000;">:
                    bottom</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">1</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">default</span><span style="background-color: #f5f5f5; color: #000000;">:
                    alert(</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">请按方向键</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">);
            }
        }
        document.onkeyup</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #0000ff;">function</span><span style="background-color: #f5f5f5; color: #000000;">(ev){
            </span><span style="background-color: #f5f5f5; color: #0000ff;">var</span><span style="background-color: #f5f5f5; color: #000000;"> e</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">ev</span><span style="background-color: #f5f5f5; color: #000000;">||</span><span style="background-color: #f5f5f5; color: #000000;">window.event;
            </span><span style="background-color: #f5f5f5; color: #0000ff;">switch</span><span style="background-color: #f5f5f5; color: #000000;">(e.keyCode){
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">37</span><span style="background-color: #f5f5f5; color: #000000;">:
                    left</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">38</span><span style="background-color: #f5f5f5; color: #000000;">:
                    s</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">39</span><span style="background-color: #f5f5f5; color: #000000;">:
                    right</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">case</span> <span style="background-color: #f5f5f5; color: #000000;">40</span><span style="background-color: #f5f5f5; color: #000000;">:
                    bottom</span><span style="background-color: #f5f5f5; color: #000000;">=</span><span style="background-color: #f5f5f5; color: #000000;">0</span><span style="background-color: #f5f5f5; color: #000000;">;
                    </span><span style="background-color: #f5f5f5; color: #0000ff;">break</span><span style="background-color: #f5f5f5; color: #000000;">;
                </span><span style="background-color: #f5f5f5; color: #0000ff;">default</span><span style="background-color: #f5f5f5; color: #000000;">:
                    alert(</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">请按方向键</span><span style="background-color: #f5f5f5; color: #000000;">'</span><span style="background-color: #f5f5f5; color: #000000;">);
            }
        }
    </span><span style="color: #0000ff;"></</span><span style="color: #800000;">script</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>

<span style="color: #0000ff;"></</span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
Nach dem Login kopieren

 

Verwandte Etiketten：
简单的使用键盘控制方块移动
Quelle：php.cn
Vorheriger Artikel：CSS3-Selektor (Teil 1) Nächster Artikel：Vier CSS-Kompilierungsstile von Sass
Erklärung dieser Website
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn
Neueste Artikel des Autors
Aktuelle Ausgaben
function_exists() kann die benutzerdefinierte Funktion nicht ermitteln Funktionstest () {Verwendung der Verwendung durch -Durch -Durch -Durch -Durch -Durch -Durc...
Aus 2024-04-29 11:01:01
0
3
2057
So zeigen Sie die mobile Version von Google Chrome an Hallo Lehrer, wie kann ich Google Chrome in eine mobile Version umwandeln?
Aus 2024-04-23 00:22:19
0
11
2211
Das untergeordnete Fenster bedient das übergeordnete Fenster, aber die Ausgabe antwortet nicht. Die ersten beiden Sätze sind ausführbar, der letzte Satz jedoch nicht.
Aus 2024-04-19 15:37:47
0
1
1865
Im übergeordneten Fenster erfolgt keine Ausgabe document.onclick = function(){ window.opener.document.write('Ich bin die Ausgabe des unter...
Aus 2024-04-18 23:52:34
0
1
1750
Wo gibt es die Kursunterlagen zum CSS-Mindmapping? Kursunterlagen
Aus 2024-04-16 10:10:18
0
0
1776
verwandte Themen
Mehr>
Beliebte Empfehlungen
Beliebte Tutorials
Mehr>
Verwandte Tutorials
Beliebte Empfehlungen
Aktuelle Kurse
Neueste Downloads
Mehr>
Web-Effekte
Quellcode der Website
Website-Materialien
Frontend-Vorlage