Javascript onsubmit clearcontent not working -

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  & lt; textarea onfocus = "javascript: clearContents (यह); this.cleared = true;" पंक्तियों = "5" cols = "40" id = "comment" नाम = "टिप्पणी" & lt;? Php if ($ vis ["username"] == $ pusername) {गूंज "अक्षम"; }? & Gt; & gt; ... & lt; / textarea & gt; & Lt; input onsubmit = "यदि (! This.comment.cleared) clearContents (this.comment); वापसी सच;" प्रकार = "सबमिट करें" नाम = "जमा करें" मान = "स्टेम!" / & Gt; फ़ंक्शन साफ़ करेंसंसाधन (तत्व) {element.innerHTML = ''; }

यह अभ्यस्त काम है, और मैं इसे क्यों नहीं समझ सकता यह क्या करता है: सामग्री को साफ करता है अगर वह व्यक्ति द्वारा ऑनफोकस / क्लिक नहीं किया गया है 

  स्पष्ट संविदाएं (दस्तावेज़.getElementById ('टिप्पणी'))

आपको ऑनसबमिट को और

gtc: से बाँध कर रखना चाहिए और इसे विनोदी ढंग से करना चाहिए , आदर्श ...


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