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JavaScript dynamically determines html elements and performs different operations_javascript skills

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Release： 2016-05-16 16:44:26

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In order to perform different operations on different elements in JavaScript, you need to judge the element that triggers the event in JavaScript, and then perform different operations.

Example:

html

Copy code The code is as follows:

javascript

Copy code The code is as follows :

Acquisition of the name and id attributes of the input is unsuccessful, but the value is OK. I don’t know why. What reason.

Reference:

Copy code The code is as follows:

 
var obj=document .getElementById("div1").getElementsByTagName("textarea") 
for(var i=0;i{ 
if(obj[i].id==" aa") 
{ 
alert(obj[i].innerText) 
} 
} 

Related labels：

html element javascript

source：php.cn

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