js计算器
2018-07-19 本文已影响0人
WANGLIN_HZ
<!DOCTYPE html>
<html>
<head>
<title>计算器</title>
<script type="text/javascript">
window.onload = function(){
var ow1 = document.getElementById("w1");
var oselect = document.getElementById("select");
var ow2 = document.getElementById("w2");
var ow3 = document.getElementById("w3")
ow3.onclick = function(){
var val01 = ow1.value;
var val02 = ow2.value;
var sel = oselect.value;
}
}
</script>
</head>
<body>
<h1>计算器</h1>
<input type="text" id="w1">
<select id="select">
<option value="0">+</option>
<option value="1">-</option>
<option value="2">*</option>
<option value="3">/</option>
</select>
<input type="text" id="w2">
<input type="button" value="计算" id="w3">
</body>
</html>
