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July 6, 2020 11:37
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Javascript: 101 Week 4
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// from Douglas Crockford's video 'An Incovenient API - The Theory of the DOM' | |
// http://video.yahoo.com/watch/111582/992708 | |
function walkTheDOM(node, func) { | |
func(node); | |
node = node.firstChild; | |
while (node) { | |
walkTheDOM(node, func); | |
node = node.nextSibling; | |
} | |
} | |
function getTextNode() { | |
var result = []; | |
// http://forums.htmlhelp.com/index.php?showtopic=5173 | |
var someElementRef = document.getElementsByTagName('body')[0]; | |
// remove all the spaces and new lines | |
someElementRef.innerHTML = someElementRef.innerHTML.replace( | |
/\B\s\B|[\n\r\t]/g, ''); | |
walkTheDOM(someElementRef, function(node) { | |
var nodeName = node.nodeName; | |
if (nodeName === '#text') { | |
result.push(node); | |
} | |
}); | |
return result; | |
} | |
alert(getTextNode().length); |
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// from Douglas Crockford's video 'An Incovenient API - The Theory of the DOM' | |
// http://video.yahoo.com/watch/111582/992708 | |
function walkTheDOM(node, func) { | |
func(node); | |
node = node.firstChild; | |
while (node) { | |
walkTheDOM(node, func); | |
node = node.nextSibling; | |
} | |
} | |
function getTextNode() { | |
var result = []; | |
// http://forums.htmlhelp.com/index.php?showtopic=5173 | |
var someElementRef = document.getElementsByTagName('body')[0]; | |
// remove all the spaces and new lines | |
someElementRef.innerHTML = someElementRef.innerHTML.replace( | |
/\B\s\B|[\n\r\t]/g, ''); | |
walkTheDOM(someElementRef, function(node) { | |
var nodeName = node.nodeName; | |
if (nodeName === '#text') { | |
result.push(node); | |
} | |
}); | |
return result; | |
} | |
var total = getTextNode().length; | |
var child = document.createTextNode(total); | |
var parent = document.createElement('span'); | |
parent.appendChild(child); | |
document.getElementsByTagName('body')[0].lastChild.appendChild(parent); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// from Douglas Crockford's video 'An Incovenient API - The Theory of the DOM' | |
// http://video.yahoo.com/watch/111582/992708 | |
function walkTheDOM(node, func) { | |
func(node); | |
node = node.firstChild; | |
while (node) { | |
walkTheDOM(node, func); | |
node = node.nextSibling; | |
} | |
} | |
function getTextNode() { | |
var result = []; | |
// http://forums.htmlhelp.com/index.php?showtopic=5173 | |
var someElementRef = document.getElementsByTagName('body')[0]; | |
// remove all the spaces and new lines | |
someElementRef.innerHTML = someElementRef.innerHTML.replace( | |
/\B\s\B|[\n\r\t]/g, ''); | |
walkTheDOM(someElementRef, function(node) { | |
var nodeName = node.nodeName; | |
if (nodeName === '#text') { | |
result.push(node); | |
} | |
}); | |
return result; | |
} | |
// total is not include the newly elements | |
var total = getTextNode().length; | |
var child = document.createTextNode(total); | |
var parent = document.createElement('span'); | |
parent.setAttribute('id','special_span'); | |
parent.appendChild(child); | |
document.getElementsByTagName('body')[0].lastChild.appendChild(parent); | |
var bold = document.createTextNode('bold'); | |
var link = document.createElement('a'); | |
link.setAttribute('href','#'); | |
link.setAttribute('onclick', | |
'document.getElementById("special_span").innerHTML="<strong>"' + | |
'+document.getElementById("special_span").innerHTML+"</strong>"'); | |
link.appendChild(bold); | |
document.getElementsByTagName('body')[0].appendChild(link); |
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