A brief discussion on the createElement event in javascript_Basic knowledge

createElement is a concept in HTML that uses the W3C DOM object model to create child nodes, that is, child elements

Copy code The code is as follows:

<script><br> window.onload = function () {<br> var input = document.createElement('input');<br> var button = document.createElement('input');<br> input.type ='text'; <br> input.id= 'text';<br> input.value ='1';<br> button.type='button';<br> button.value ='Add step by step';<br> button.style.width = '40px';<br> button.style.height = '23px';<br> Document.body.appendChild(input);<br> Document.body.appendChild(button);<br> button.onclick = function(){<br> var value = input.value;<br> Input.value = value * 1 1;<br> }<br> }<br> </script>

Note: value is actually a character. If input.value=value*1 1; is replaced by input.value=value 1;, the result will be 111111. It keeps adding 1 in the form of characters, so at this time Value*1 can convert the value value into Int type.

Summary:

To finally solve the compatibility problem of the createElement method, you still need to pay attention to the browser. For IE, you can use its unique method of passing a legal HTML code string as a parameter to createElement. Non-IE browsers still use it. Standard approach to W3C specifications.