JAVASCRIPT

loop node list

// Convert to an array, then iterate
const nodeArray = Array.prototype.slice.call(nodeList)
nodeArray.forEach(doSomething);

// Iterate NodeList directly without conversion
Array.prototype.forEach.call(nodeList, doSomething);

// Perform operation on each element in NodeList, output results to a new Array
Array.prototype.map.call(nodeList, function(item) { 
    return item; 
}).forEach(doSomething);

// Filter NodeList, output result to a new Array
Array.prototype.filter.call(nodeList, function(item) { 
    return /* condition */; 
}).forEach(doSomething);

for(let i = 0; i < nodeList.length; ++i)  doSomething(nodeList[i]);