如何使用javascript将文本或数字范围附加到div？

Question

I inherited a JS file that goes like this:

    var id1 = document.getElementById("id1");
    var id2 = document.getElementById("id2");
    var id3 = document.getElementById("id3");
    var id4 = document.getElementById("id4"); //etc etc.

I was wondering if there is an easier way using plain Javascript to append a number to an id that has the same name, rather than listing each one out line by line.

Please advise.

Thanks!

Answer 1

 var nodes = []; var find = 6; for (var i = 1; i <= 6; i++) { nodes.push(document.getElementById('id' + i)); } console.log(nodes); 

 <div id="id1"></div> <div id="id2"></div> <div id="id3"></div> <div id="id4"></div> <div id="id5"></div> <div id="id6"></div> 

---

A more robust solution:

Use querySelectorAll to select elements that have id's that begin with id , then filter out the results that do not match id followed by a number.

 var nodes = document.querySelectorAll('[id^="id"]'); nodes = [].slice.call(nodes).filter(function(node) { return /id\\d+/.test(node.id); }); console.log(nodes); 

 <div id="id1"></div> <div id="id2"></div> <div id="id3"></div> <div id="id4"></div> <div id="id5"></div> <div id="id6"></div> <!-- This node should not be included --> <div id="idea"></div>