javascript splice() causes “arrayName.splice() is not a function” error

问题:

I am trying to remove certain values from an array containing input fields in a form:

allFields = theForm.getElementsByTagName("INPUT");  for(j = 0; j < allFields.length; j++) {     if(allFields[j].className == "btn" || allFields[j].className == "lnk") {         allFields.splice(j,1);     } } 

It causes an error. Firebug shows following error and the script doesn't work.

allFields.splice is not a function

This also happened with any other Array method I tried. How can I fix this?

回答1:

allFields is not an array, but a NodeList.

If you want to remove elements, do a reverse loop and use removeChild:

var allFields = theForm.getElementsByTagName("input"); for(var j=allFields.length-1; j>=0; j--){     if(allFields[j].className == "btn" || allFields[j].className == "lnk"){         allFields[j].parentNode.removeChild(allFields[j]);     } } 

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