<input type="button" value="mybutton1" onclick="dosomething()">test
The dosomething function evoked when to click the button,how can pass the value of the button mybutton1 into dosomething function as it's parameter ?
This question is related to
javascript
You can pass the value to the function using this.value, where this points to the button
<input type="button" value="mybutton1" onclick="dosomething(this.value)">
And then access that value in the function
function dosomething(val){
console.log(val);
}
You can get value by using id for that element in onclick function
function dosomething(){
var buttonValue = document.getElementById('buttonId').value;
}
You can pass the element into the function <input type="button" value="mybutton1" onclick="dosomething(this)">test by passing this. Then in the function you can access the value like this:
function dosomething(element) {
console.log(element.value);
}
You can do like this.
<input type="button" value="mybutton1" onclick="dosomething(this)">
function dosomething(element){
alert("value is "+element.value); //you can print any value like id,class,value,innerHTML etc.
};
Maybe you can take a look at closure in JavaScript. Here is a working solution:
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<meta charset="utf-8" />_x000D_
<title>Test</title>_x000D_
</head>_x000D_
<body>_x000D_
<p class="button">Button 0</p>_x000D_
<p class="button">Button 1</p>_x000D_
<p class="button">Button 2</p>_x000D_
<script>_x000D_
var buttons = document.getElementsByClassName('button');_x000D_
for (var i=0 ; i < buttons.length ; i++){_x000D_
(function(index){_x000D_
buttons[index].onclick = function(){_x000D_
alert("I am button " + index);_x000D_
};_x000D_
})(i)_x000D_
}_x000D_
</script>_x000D_
</body>_x000D_
</html>Source: Stackoverflow.com