String nonce

Source 

@DomName('HTMLScriptElement.nonce')
@DocsEditable()
// https://dvcs.w3.org/hg/content-security-policy/raw-file/tip/csp-specification.dev.html#interaction-with-the-script-src-directive
@Experimental()
String get nonce =>
    _blink.BlinkHTMLScriptElement.instance.nonce_Getter_(this);
void nonce=(String value)

Source 

@DomName('HTMLScriptElement.nonce')
@DocsEditable()
// https://dvcs.w3.org/hg/content-security-policy/raw-file/tip/csp-specification.dev.html#interaction-with-the-script-src-directive
@Experimental()
set nonce(String value) =>
    _blink.BlinkHTMLScriptElement.instance.nonce_Setter_(this, value);