验证表单替换文本textarea

Question

I have a validation form checker - when my checkbox has the value of 1 - i want to replace some text in the TextArea with new Text. Does anyone know the correct code to do this?

everything else in the form checker works, except this one.

function validateForm(myForm){
if (getRadioSelected(myForm.myCheckBox) == 1) {
myForm.myTextArea.value.replace("Old Text","Replacement Text");
}
}

Answer 1

var newString = myForm.myTextArea.value.replace("Old Text","Replacement Text");
myForm.myTextArea.value = newString;

The replace method returns a string but doesn't set your textarea value. This does.

- edit -

jsFiddle in action !