js获取标签内容和输出内容到页面
获取:
html:
<select id="choiceSelect" onchange="changeImg()"> <option value="1">石头</option> ??<option value="2">剪刀</option> ??<option value="3">布</option></select>
<img src="img/1.png" id="img1">
js:
<script type="text/javascript"> ???????var n1 = 1;function changeImg(){ ???????????var changeImg = document.getElementById("choiceSelect"); ???????????n1 = changeImg.value; ???????????// alert(n1); ???????????document.getElementById("img1").src="img/"+n1+".png"; ???????}</script>
输出:
html: <p id = "finalresult"></p>
js: document.getElementById("finalresult").innerHTML = "输出的内容";
js简单的获取与输出
原文地址:https://www.cnblogs.com/makangning/p/9373948.html