"var a = "(1+8)/(2+3) "; " ............ e的值是从abcd四个文本框取得的啊
var a = parseInt(document.getElementById("a").value); var b = parseInt(document.getElementById("b").value); var c = parseInt(document.getElementById("b").value); var d = parseInt(document.getElementById("b").value);var e = "(a+b)/(c+d)";document.getElementById("e").value = parseFloat(eval(e)).toFixed(4);
var a = parseInt(document.getElementById( "a").value); var b = parseInt(document.getElementById( "b").value); var c = parseInt(document.getElementById( "c").value); var d = parseInt(document.getElementById( "d").value); var e = "(a+b)/(c+d) "; document.getElementById( "e ").value = parseFloat(eval(e)).toFixed(4);
............
e的值是从abcd四个文本框取得的啊
var a = parseInt(document.getElementById("a").value);
var b = parseInt(document.getElementById("b").value);
var c = parseInt(document.getElementById("b").value);
var d = parseInt(document.getElementById("b").value);var e = "(a+b)/(c+d)";document.getElementById("e").value = parseFloat(eval(e)).toFixed(4);
var b = parseInt(document.getElementById( "b").value);
var c = parseInt(document.getElementById( "c").value);
var d = parseInt(document.getElementById( "d").value); var e = "(a+b)/(c+d) "; document.getElementById( "e ").value = parseFloat(eval(e)).toFixed(4);