To get and set a Dynamics 365 field, first find out the field name. Open the form and find the field, for example on the leads form, the topic:
Double click the field and see what the Name is, in this case “subject”:
function UpdateField() {
var s = Xrm.Page.getAttribute("subject").getValue();
alert(s);
Xrm.Page.getAttribute("subject").setValue("Hello World");
var s = Xrm.Page.getAttribute("subject").getValue();
alert(s);
}When this runs we see first the original topic:
Then the new topic:
Field is updated:
This can also be used to check if the field is empty.
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