Simple example of addition, subtraction, multiplication and division in javascript
<html><head><meta http-equiv="Content-Type" content="text/html;charset=utf-8" /></head><script language="javascript" type="text/javascript">//Divide function accDiv(arg1,arg2){ var t1 = 0, t2 = 0, r1, r2, n; try { t1 = arg1.toString().split(".")[1].length; } catch(e) {t1 = 0;} try { t2 = arg2.toString().split(".")[1].length; } catch(e) {t2 = 0;} with(Math) { r1 = Number(arg1.toString().replace(".",")); r2 = Number(arg2.toString().replace(".",")); n = Math.max(t1,t2); return (r1/r2)*pow(10, t2-t1); }}//Multiple function accMul(arg1,arg2){ var t1 = 0, t2 = 0, r1, r2; try { t1 = arg1.toString().split(".")[1].length; } catch(e) {t1 = 0;} try { t2 = arg2.toString().split(".")[1].length; } catch(e) { t2 = 0;} with(Math) { r1 = Number(arg1.toString().replace(".",")); r2 = Number(arg2.toString().replace(".",")); return (r1*r2)/pow(10, t2+t1); }}//Add function accAdd(arg1,arg2){ var t1 = 0, t2 = 0, m; try { t1 = arg1.toString().split(".")[1].length; } catch(e) {t1 = 0;} try { t2 = arg2.toString().split(".")[1].length; } catch(e) {t2 = 0;} with(Math) { m=Math.pow(10,Math.max(t1,t2)); return (arg1 * m + arg2 * m) / m; }}//Subtraction function accSubtr(arg1,arg2){ var t1 = 0, t2 = 0, m, n; try { t1 = arg1.toString().split(".")[1].length; } catch(e) {t1 = 0;} try { t2 = arg2.toString().split(".")[1].length; } catch(e) {t2 = 0;} with(Math) { //Dynamic control precision length n = Math.max(t1,t2); m = Math.pow(10, n); //Return (arg1 * m - arg2 * m) / m; return ((arg1 * m - arg2 * m) / m).toFixed(n); }}//Add a div method to the String type, which is more convenient to call. String.prototype.div = function (arg){ return accDiv(this, arg);}//Add a mul method to the String type, making it more convenient to call. String.prototype.mul = function (arg){ return accMul(arg,this);}//Add an add method to the String type, making it more convenient to call. String.prototype.add = function (arg){ return accAdd(arg,this);}//Add a subtr method to the String type, making it more convenient to call. String.prototype.subtr = function (arg){ return acSubtr(this, arg);}function cal(){ var arg1 = document.Form1.TextBox1.value; var arg2 = document.Form1.TextBox2.value; //document.Form1.TextBox5.value = accDiv(arg1, arg2); //document.Form1.TextBox6.value = accMul(arg1, arg2); //document.Form1.TextBox7.value = accAdd(arg1, arg2); //document.Form1.TextBox8.value = accSubtr(arg1, arg2); document.Form1.TextBox5.value = arg1.div(arg2); document.Form1.TextBox6.value = arg1.mul(arg2); document.Form1.TextBox7.value = arg1.add(arg2); document.Form1.TextBox8.value = arg1.subtr(arg2);}</script><body><form id="Form1" name="Form1" method="post" runat="server"><div style="border:solid 1px #000000; width:600px;"> <div style="float:left; width:30%;"><input id="TextBox1" type="text" value="0" name="TextBox1" /></div> <div style="float:left; width:30%;"><input id="TextBox2" value="0" type="text" name="TextBox2" /></div> <div style="float:left; width:30%;"> <div>accDiv: <input id="TextBox5" type="text" name="TextBox5" /></div> <div>accMul: <input id="TextBox6" type="text" name="TextBox6" /></div> <div>accAdd: <input id="TextBox7" type="text" name="TextBox7" /></div> <div>accSubtr: <input id="TextBox8" type="text" name="TextBox8" /></div> </div> <div style="float:right; width:10%;"><input type="button" name="aa" value="cal" onclick="cal();" /></div></div></form></body></html>The above simple example of addition, subtraction, multiplication and division of javascript is all the content I share with you. I hope you can give you a reference and I hope you can support Wulin.com more.