Proficient in JavaScript, correct the cleanWhitespace function_javascript class library

Copy code The code is as follows:

function cleanWhitespace(element){
//If no parameters are provided , then process the entire HTML document
element = element || document;
//Use the first child node as the start pointer
var cur = element.firstChild;
//Temporary variables are used to save The next node of the current node
var tmp;
//Until there are no child nodes
while (cur != null){
//Save the next node of the current node
tmp =cur.nextSibling
//If the node is a text node, it should contain spaces
if ( cur.nodeType == 3 && ! /S/.test(cur.nodeValue)){
//Delete This text node
element.removeChild( cur );
//Otherwise, it is an element
} else if (cur.nodeType == 1){
//Recurse the entire document
cleanWhitespace( cur );
}
cur = tmp;//Traverse child nodes
}
}

Also transfer a usable

Copy code The code is as follows:

function cleanWhitespace2(node) {
var notWhitespace = /S/;
for (var i=0; i < node.childNodes.length; i ) {
var childNode = node.childNodes[i];
if ((childNode.nodeType == 3)&&(!notWhitespace .test(childNode.nodeValue))) {
node.removeChild(node.childNodes[i]);
i--;
}
if (childNode.nodeType == 1) {
cleanWhitespace2(childNode);
}
}
}

If you only clear the white space of this node, the child nodes will not be traversed

Copy code The code is as follows:

function cleanWhitespace2(oEelement)
{
for(var i=0;ivar node=oEelement.childNodes[i];
if(node.nodeType==3 && !/S/.test(node.nodeValue)){node.parentNode. removeChild(node)}
}
}

Also transfer a usable one

Copy code The code is as follows:

function cleanWhitespace2(node) {
var notWhitespace = /S/;
for (var i=0; i < node.childNodes.length ; i ) {
var childNode = node.childNodes[i];
if ((childNode.nodeType == 3)&&(!notWhitespace.test(childNode.nodeValue))) {
node.removeChild (node.childNodes[i]);
i--;
}
if (childNode.nodeType == 1) {
cleanWhitespace2(childNode);
}
}
}

If you only clear the blank of this node, do not traverse the child nodes

Copy code The code is as follows:

function cleanWhitespace2(oEelement)
{
for(var i=0;ivar node=oEelement. childNodes[i];
if(node.nodeType==3 && !/S/.test(node.nodeValue)){node.parentNode.removeChild(node)}
}
}