Javascript sets the ReadOnly property of an object (sample code)_javascript skills

The ReadOnly attribute in JS is rather strange. Create an object directly and assign the readonly attribute to the object. You cannot use the following method like in HTML:

Copy code The code is as follows:

var x=document.createElement("input");
x.type="text";
x.value="ttttt ";
x.id="xy";
x.readonly="readonly";

The object created in this way is not read-only. The correct way to write it is:

Copy the code The code is as follows:

var x=document.createElement( "input");
x.type="text";
x.value="ttttt";
x.id="xy";
x.readOnly=true;

You should pay attention to this when writing JS.