Javascript Methods JavaScript Reference

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  4. SubstringData() Syntax, Parameters and Note
Note:
Returns a string from the text object.
    
Syntax:
    
textNodeName.subStringData(param1, param2) // IE only
document.getElementById("commentID").subStringData(param1, param2)
document.all.commentID.subStringData(param1, param2) // IE only
Parameters:
    param1   Required; start index.
    param2   Required; the length of the subset string.