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Home Web Front-end JS Tutorial JS operation numerical calculation in input tag

JS operation numerical calculation in input tag

php中世界最好的语言
php中世界最好的语言
Apr 19, 2018 am 10:21 AM
input javascript calculate

This time I bring to you, what are the precautions, the following is a practical case, let's take a look.

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<!DOCTYPE html>

<html>

<head>

<metacharset="UTF-8">

<title></title>

<script>

window.onload=function(){

var oIput1=document.getElementById(&#39;put1&#39;);

var oIput2=document.getElementById(&#39;put2&#39;);

var nAdd=document.getElementById(&#39;add&#39;);

var nSub=document.getElementById(&#39;subtraction&#39;);

nAdd.onclick=function(){

var a=Number(oIput1.value);

var b=Number(oIput2.value);

c = a+b;

alert(c);

}

nSub.onclick=function(){

var a=Number(oIput1.value);

var b=Number(oIput2.value);

c = a-b;

alert(c);

}

}

</script>

</head>

<body>

数值1:<inputid="put1"type="text"value=""/>

数值2：<inputid="put2"type="text"value=""/>

<inputtype="button"id="add"value="求和"/>

<inputtype="button"id="subtraction"value="相减"/>

</body>

</html>

Copy after login


# I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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