Unable to call a nested function within an onclick event function

I am facing an issue with a function that contains another function within it. The main function has an onclick event, and I want it to call the inner function. However, when I click on the element, it gives an error saying that the function is not defined. The onclick event is part of a for loop. Here's the code snippet:

function changeColor(){
    function textBackgroundColor(color){
        //updateText("<font color='"+color+"'>"+selectedText()+"</font>");
        alert("a");
    }
    var tableContent;
    var colors=["#000000","#FF0000","#00FF00","#0000FF","#FFFF00","#00FFFF","#FF00FF","#666666"];
    var names=["Black","Red","Green","Blue","Yellow","Turquoise","Magenta","Gray"];
    for(var i=0;i<colors.length;i++){
        tableContent=tableContent+"<tr><td><div **onclick='textBackgroundColor(this.style.background)'** style='cursor:pointer;width:28px;height:28px;background:"+colors[i]+";margin-left:17px;'></div></td><td>"+names[i]+"</td><td>"+colors[i]+"</td></tr>";
    }
    tableContent="<center><table id='colorTable'><tr><th>Preview&nbsp;&nbsp;</th><th>Color Name&nbsp;&nbsp;</th><th>Color Code</th></tr>"+tableContent+"</table></center>";
    document.getElementById("sidebar").innerHTML=tableContent.replace("undefined","");
}
javascript

Answer №1

It's true that accessing metinRenginiDegistir() is not possible because it's out of scope. One way to work around this limitation is to redefine 'function metinRenginiDegistir()' as 'this.metinRenginiDegistir = function(){}.bind(this);'. Then, assign your 'onclick' variable to 'this.metinRenginiDegistir()' within the 'renk()' method. Alternatively, if you're setting it outside of 'renk()', create an instance of renk() and use that:

var renkInstance = new renk();

...onclick = renkInstance.metinRenginiDegistir;

You cannot directly access 'metinRenginiDegistir' from outside 'renk()', but by using the renkInstance object created through instantiation of 'renk()', you can access it within 'renk()'s scope.

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