3 examples of 'drawing images using ajax' in JavaScript

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127function generateNewImage() {
128 // generate new random z
129 z = [];
130 N = 128;
131 SD = 1.0;
132 var trunc = 2.5;
133 for (var i=0; i<N; i++) {
134 z.push(Math.max(-trunc, Math.min(trunc, randn_bm(SD))));
135 }
136
137 // clear class-map
138 p5_input.clear_canvas();
139
140 // request
141 updateResult(true);
142}
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25function fetch_images() {
26 $(".exchange-logo").each(function () {
27 const element = $(this);
28 if(element.attr("src") === ""){
29 $.get(element.attr("url"), function(data) {
30 element.attr("src", data["image"]);
31 const parentLink = element.parent("a");
32 if (parentLink.attr("href") === ""){
33 parentLink.attr("href", data["url"]);
34 }
35 });
36 }
37 });
38}
483function doImage(err, canvas) {
484 var img = document.createElement('img');
485 var dimensions = map.getSize();
486 img.width = dimensions.x;
487 img.height = dimensions.y;
488 img.src = canvas.toDataURL("image/png");
489
490 var suffixe_file = $("select").val()[0];
491 var suffix;
492 auj = new Date();
493 auj.setDate(auj.getDate() - 1);
494 auj = auj.getFullYear() + '_' + parseInt(auj.getMonth() + 1) + '_' + auj.getDate();
495 if (suffixe_file === "1") {
496 suffix = 'centres_ebola_guinee_' + auj;
497 }
498 else if (suffixe_file === "2") {
499 suffix = 'cte_guinee_' + auj;
500 }
501 else if (suffixe_file === "3") {
502 suffix = 'cdt_guinee_' + auj;
503 }
504 else if (suffixe_file === "4") {
505 suffix = 'cts_guinee_' + auj;
506 }
507 else{
508 suffix = 'labos_guinee_' + auj;
509 };
510
511 $("a#print").attr("download", suffix + '.png')
512 $("a#print").attr("href", img.src)
513
514 $('#wheel').hide();
515 $("a#print").html("Télécharger la carte");
516 $('.dlmap').fadeIn("slow");
517 }

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