You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.3 KiB
63 lines
1.3 KiB
function addChar(input, character) {
|
|
if(input.value == null || input.value == "0")
|
|
input.value = character
|
|
else
|
|
input.value += character
|
|
}
|
|
|
|
function cos(form) {
|
|
form.display.value = Math.cos(form.display.value);
|
|
}
|
|
|
|
function sin(form) {
|
|
form.display.value = Math.sin(form.display.value);
|
|
}
|
|
|
|
function tan(form) {
|
|
form.display.value = Math.tan(form.display.value);
|
|
}
|
|
|
|
function sqrt(form) {
|
|
form.display.value = Math.sqrt(form.display.value);
|
|
}
|
|
|
|
function ln(form) {
|
|
form.display.value = Math.log(form.display.value);
|
|
}
|
|
|
|
function exp(form) {
|
|
form.display.value = Math.exp(form.display.value);
|
|
}
|
|
|
|
function deleteChar(input) {
|
|
input.value = input.value.substring(0, input.value.length - 1)
|
|
}
|
|
|
|
function changeSign(input) {
|
|
if(input.value.substring(0, 1) == "-")
|
|
input.value = input.value.substring(1, input.value.length)
|
|
else
|
|
input.value = "-" + input.value
|
|
}
|
|
|
|
function compute(calc) {
|
|
$("#display").text(eval(calc));
|
|
}
|
|
|
|
function square(form) {
|
|
form.display.value = eval(form.display.value) * eval(form.display.value)
|
|
}
|
|
|
|
function checkNum(str) {
|
|
for (var i = 0; i < str.length; i++) {
|
|
var ch = str.substring(i, i+1)
|
|
if (ch < "0" || ch > "9") {
|
|
if (ch != "/" && ch != "*" && ch != "+" && ch != "-" && ch != "."
|
|
&& ch != "(" && ch!= ")") {
|
|
alert("invalid entry!")
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
return true
|
|
} |