How Can I Create DOM Elements with jQuery, Just Like Using `document.createElement`?-JS Tutorial-php.cn

How Can I Create DOM Elements with jQuery, Just Like Using `document.createElement`?

Creating DOM Elements with jQuery: Equivalents to document.createElement

In modern web development, jQuery provides a concise and versatile approach for DOM manipulation. When transitioning from legacy JavaScript code that utilizes document.createElement, it's essential to explore the jQuery alternatives.

Consider the following example from the legacy code:

var d = document;
var odv = d.createElement("div");
odv.style.display = "none";
this.OuterDiv = odv;

var t = d.createElement("table");
t.cellSpacing = 0;
t.className = "text";
odv.appendChild(t);

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In jQuery, the equivalent code for creating a div and appending a

would be:

this.$OuterDiv = $('<div></div>')
    .hide()
    .append($('<table></table>')
        .attr({ cellSpacing : 0 })
        .addClass("text")
    )
;

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To clarify, $('

') creates a new element with div tag and immediately closes the tag. This approach requires an extra closing tag for proper DOM structure. Alternatively, you can create an element without explicitly closing it using $('

'), but it's recommended to use the closed tag approach to ensure consistent results across different browsers.

Note that the jQuery syntax provides a chainable interface, allowing you to perform multiple operations (such as styling and appending) on the newly created elements in a concise manner.

Furthermore, if performance is a concern, it's worth mentioning that document.createElement remains the fastest method for creating DOM elements, as demonstrated in benchmark tests. The performance difference, however, is minimal for most practical applications.

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